Mathematics - 30 August 2007

How do you "factor by grouping" in Pre-Calc?

My pre-calc packet asks me to "factor by grouping".. and I am a bit confused.

Here are some of the questions that tell me to "factor by grouping":
1. x^3 - x^2 + 2x - 2
2. 2x^3 - x^2 - 6x + 3
3. 6x^3 - 2x + 3x^2 - 1

If you could explain it to me it would really help, thanks!

2007-08-30 11:52:46 · 3 answers · asked by AJ B 1

(1) About 17 % of kids will attend an overnight summer, 11/50 will attend a day camp,ad 0.59 will attend no summer camp at all.Which roup of kids is the gratest?



plzplzplzplzplz

2007-08-30 11:52:10 · 6 answers · asked by Anonymous

∞
∫dx / (x^2 - 1)
0

2007-08-30 11:46:28 · 4 answers · asked by Dr D 7

One cubic meter (1.0m^3) of aluminum has a mass of 2700kg, and 1m^3 iron has a mass of 7860kg. What would the radius of a solid aluminum sphere be if it has the same mass as a solid iron sphere with a radius of 2.4 cm. Answer in cm.
Please tell me whats the answer and how u got it.!!!
thanks in advance

2007-08-30 11:37:17 · 2 answers · asked by Anonymous

www.keypress.com/Documents/dg3/ PracticeYourSkills/DG_PYS_01.pdf

2007-08-30 11:36:13 · 2 answers · asked by simbainkempner 1

(-2x)^3 * (-3x)^2

Thanks!

2007-08-30 11:26:05 · 3 answers · asked by burgerbabe84 2

How can I show that, if a subset A of R^n is compact, then every open cover of A contains a finite subcover?

Thank you

2007-08-30 11:23:23 · 2 answers · asked by Anabela 1

i really need help with this problem. Im a real dummie when it comes to math! I would really appreciate it.

2007-08-30 11:17:31 · 9 answers · asked by Tabitha B 1

2007-08-30 11:14:11 · 2 answers · asked by bdgurl5388 1

2007-08-30 11:13:07 · 11 answers · asked by ike 3

2007-08-30 11:12:53 · 9 answers · asked by Anonymous

(3-2 √7)(3+2 √7)

2007-08-30 11:12:04 · 9 answers · asked by Anonymous

93.0 x 10^6 in scientific notation?

What are more variations?

2007-08-30 11:09:32 · 9 answers · asked by Rain King 2

I can't learn as fast as others.

2007-08-30 11:08:57 · 9 answers · asked by passmore94 1

2 squareroot 121+a small 3squareroot 27+square root 144

ohh...and how do you find slope??

2007-08-30 11:08:55 · 2 answers · asked by lalalala (: 3

when multiplying complex number problems, is it best to change the i or -i or i^2 at the very beginning, in the original problem, or at the end when you get the answer?
ex- ( 2 - i^2) * (-3 - i^2)
would i do(2 * -3) + (2 * -i^2) + (-i^2 * -3) + (-i^2 * -i^2)
-6 + -2i^2 + 3i^2 + i^4

thanks

2007-08-30 11:07:15 · 7 answers · asked by Boo Radley 4

What action will you take to do this?........... Show all work...... And check.... thanx =)

2007-08-30 11:06:31 · 7 answers · asked by Mia O 1

what is a minuend and diffrence and subtrahend?? I need Help, its for math!! PLZZZZZZZz

2007-08-30 11:03:48 · 5 answers · asked by eViE 2

How would you simplify and give the answer in simplest radical form?:

sqrt means square root

sqrt(75)/sqrt(3)

2007-08-30 10:52:50 · 4 answers · asked by Anonymous

I was wondering how to do a couple problems and i try doing them but i get lost! Somebody help me please with steps. Thank you :)

The first problem is 8(3-m)+7=47 i distrubited but i get some weird answer like 8m=33 what did i do wrong??

These are prolly easy but i dont get it i hate math!

A=lm slove for L

and last problem

0.7(2+x) > 1.1x + 5.75

2007-08-30 10:52:10 · 5 answers · asked by JoJo 1

2007-08-30 10:51:16 · 7 answers · asked by kanayo c 1

when I solve a problem like sin(tan^(-1) -3/7) , my calculator should be set in radian mode, not degrees, right?

2007-08-30 10:50:03 · 2 answers · asked by odonata 2

could any one work this out for me and show the work. i need it really badly....

problem: 31C25 X 15C10 / 46C35

PLEASE HELP ME!!!!!

2007-08-30 10:45:08 · 6 answers · asked by johnsondonavon 1

ok I'm a Sr. in High School in a Calculus AP class but this is just review.. help me!
(absolute value)

1. |x|²-6|x|+8=0


2.|x|³-2|x|²-3|x|=0

thx!

2007-08-30 10:42:29 · 1 answers · asked by Katie 4

okayyy.
limits.

idk how to figure this out.


lim csc x
x --> pi -

(not negative pi, but pi from the leftt!)
anyone know?

2007-08-30 10:39:45 · 3 answers · asked by Kat 2

The array shows the first four rows of the triangle attributed to the French mathematician Blaise Pascal. Study the triangle and determine the entries in the tenth row.
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
"Algebra Problems One Step Beyond" by Reuben Schadler

2007-08-30 10:38:36 · 8 answers · asked by baonam02 2

What is the easiest method for solving trigonometric equations?

I have two questions below. I am looking for the easiest method to apply. As you answer the two questions, please show me step by step what you are doing.

(1) Give the general solution to 2cos2x + 1 = 0

NOTE: For question (1), by "general solution" the author means to include the term 2kpi with each value found for x, where k = any integer.

(2) Give all solutions to the equation 2cos^2(3x) - 1 = 0 on the interval [0, 2pi).

Thanks

2007-08-30 10:35:36 · 1 answers · asked by journey 1

QUESTIONS:

(1) What exactly is an angle of depression?

(2) I have a trig question to solve and it is:

Find all solutions of the trig equation below in the interval
[0, 2pi).

sqrt{3}cos3x - 1 = 0

2007-08-30 10:30:23 · 1 answers · asked by journey 1

Math help!!!

2007-08-30 10:30:20 · 12 answers · asked by amecheer7 1

i have the graph of the derivative of f

the graph seems to make W shape with another loop

it seems to have 4 roots that are on the positive side of the x axis

all of these roots are in order starting with the first nearest to the origin...

the first root is just the line going down from above the x axis to below the x axis.

the second root is the line looping back up from below the x axis but it only touches the x axis and loops back down.... however, in this case, the touch to the x axis is not smooth but is more like a "kink", sharp pointy...

the third root is just the line looping back up again and this time going from the bottom of the x axis, through the x axis to the top of the x axis...

the fourth root is just the line looping back down from the tope of the x axis but smoothly looping back up just after barely touching the x axis... so this time there was no kink or sharpness... just plain smooth loop...

see additional details below...

2007-08-30 10:29:47 · 2 answers · asked by quizzical 1