I really need to know How to Do this.It says find it products...
2007-01-21 16:02:11 · 5 answers · asked by Anonymous in Education & Reference ➔ Teaching
(x+13)(x+3)=?
Consider first bracket it is x+13
Multiply by x to each term of second bracket and add the two product terms
i.e.
x*x+x*3-----1
do the same things with 13
13*x+13*3-----2
Now add eq 1 and 2
x*x+16*x+39
is it ok to u?
2007-01-21 16:13:56 · answer #1 · answered by ? 2 · 1⤊ 0⤋
use the FOIL method
First: x *x= x^2
outside: x* 3=3x
inside: 13 *x=13x
last: 13 * 3= 39
then combind like trems
x^2 +3x+ 13x +39 becomes
x^2 +16x + 39 :final answer
2007-01-21 16:11:57 · answer #2 · answered by Heather-Dawn 3 · 1⤊ 0⤋
use the FOIL method.
that is where you multiply the first x to the other x and 13.
You're basically doing this:
x(x+3) 13(x+3)
distribute.
you will end up with:
x^2+3x+13x+9
then, combine like terms. The only like terms are 3x and 13x, so your final answer is:
x^2 + 16x + 9
2007-01-21 16:08:08 · answer #3 · answered by Johanna 2 · 1⤊ 0⤋
even easier than foil:
multply x by x=x^2
multypily x by 3=3x
multyply 13 by x=13x
multiply 3 by 13= 36
add them all together (x^2+3x+13x+36)
your answer will be x^2 +16x+36
2007-01-21 16:15:35 · answer #4 · answered by Ellie 2 · 1⤊ 0⤋
( x + 13) (x + 3)
= x^2 + 3x + 13x + 39
= x^2 + 16x + 39
Now you can evaluate this expression for any value of x.
2007-01-21 16:33:41 · answer #5 · answered by Anonymous · 1⤊ 0⤋