^2 means to the 2nd power.
/ is the fraction devider like 1/10 is 1 over 10
sqrt is SquareRoot EX: sqrt -4 is The squareroot of -4
....................................................................................
Solve the quadratic equation by factoring.
1. 4x^2 - 25 = 0
2. -9x^2 + 12x - 4 = 0
3. 6 = x^2 - x
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Simplify the expression.
4. i + 3 + sqrt -4
5. (-5 - 8i) - (-4 - 8i)
6. 2+i/2-i (That's 2 + i over 2- i)
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Use the quadratic formula to solve the equation.
7. x^2 - 3x = -5
8. 2x^2 - 8x = -16
2007-11-19 12:19:26 · 10 answers · asked by net_phantom16 2 in Science & Mathematics ➔ Mathematics
Cmon please, Im going to fail if I dont get these right, please somebody?
2007-11-19 12:25:55 · update #1
I can substitute abc, I guess I'm just to lazy, I alwayz get it wrong for some reason, everything else is a peice of cake for me...o.O
2007-11-19 12:42:07 · update #2
Don't we deserve more than ten points for doing your homework?
2007-11-19 12:22:34 · answer #1 · answered by Steve C 7 · 1⤊ 0⤋
1, (2x+5)(2x-5)
2, (-3x-2 )(3x+2)
3, x = 3
4, 3(i + 1)
... aren't you failing by not doing them?
... shouldn't you fail if you cant do them?
... am *I* going to pass yoru class??
5, -1
6, 2+i/2-i
7 & 8: the quadratic formula is a VERY easy process to follow
for 7 use the equation: x^2 -3x +5 = 0
for 8 us the equation: 2x^2 -8x +16 = 0
... if you cannot use the quadratic equation and substitute abc values then you really should probably repeat the class.
2007-11-19 20:22:33 · answer #2 · answered by David F 5 · 1⤊ 1⤋
3245y357576-97563057634057836503765264208765420456235026520857630573460756305736450873563795630856 and a 1/2.....do your homework.....and we def deserve more than 10 points to do your homework
2007-11-19 20:26:46 · answer #3 · answered by Lee K 2 · 0⤊ 0⤋
1. (2x+5)(2x-5)
2. (-3x-2)(3+2)
3. (x-3)(x+2)
4. 3i+3
5. -1
thats all for now
2007-11-19 20:28:42 · answer #4 · answered by Norgbirdie 2 · 0⤊ 0⤋
1. (2x+5)(2x-5)=0
x=2.5 or -2.5
2. (3x-2)2=0
x=2/3
3. (x-3)(x+2)=0
x=3 or -2
4. 3i+3
5. -1
6. (2+sqrt-1)2/(2-sqrt-1)(2+sqrt-1)
(3+4i)/5
7. no solution, literally
8. no solution, literally
2007-11-19 20:32:22 · answer #5 · answered by fomalhaut 2 · 0⤊ 1⤋
The owl was staring at the purple people.
In the interpretation of this sentence u will find the answers to your universe.....
2007-11-19 20:26:22 · answer #6 · answered by Matei Stefan 5 · 1⤊ 0⤋
I'm going to need for you to do your own homework.
2007-11-19 20:22:24 · answer #7 · answered by justaskin 3 · 2⤊ 0⤋
too easy how can u even bother asking for help
2007-11-19 20:25:01 · answer #8 · answered by Anonymous · 1⤊ 0⤋
Too dumb to do your own math homework?
2007-11-19 20:22:48 · answer #9 · answered by bh 3 · 1⤊ 0⤋
yes...5.
2007-11-19 20:22:51 · answer #10 · answered by dawn666annapolis 6 · 0⤊ 0⤋