help me solve this
2007-10-30 06:47:19 · 7 answers · asked by Najaf R 1 in Science & Mathematics ➔ Mathematics
Hi,
For this question, if you want to solve for x alone, you have to set this equal to 0:
(x+8)(2x-3) = 0
Now, set each factor equal to zero:
x + 8 = 0
x = -8 <=== One possible answer
2x - 3 = 0
2x = 3
x = 3 / 2 <=== Second possible answer
As you can tell we got two different answers since if you used the FOIL method you would get a polynomial of degree 2.
I hope that helps you out! Please let me know if you have any other questions!
Sincerely,
Andrew
2007-10-30 06:52:23 · answer #1 · answered by The VC 06 7 · 0⤊ 0⤋
Use the FOIL method. First Outer Inner Last.
x(2x)
x(-3)
8(2x)
8(-3)
Then collect like terms
2007-10-30 13:55:41 · answer #2 · answered by Jen 3 · 0⤊ 0⤋
x+8=0 x=-8
2x-3=0 2x=3 x=3/2
2007-10-30 13:55:04 · answer #3 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
2x squared + 5
2007-10-30 13:51:15 · answer #4 · answered by Anonymous · 0⤊ 2⤋
use Foil (First, outter, inner, last)
(x+8)(2x-3)
2xsquared -3x +10x +5
2xsquared +7x +5 <--- (your answer)
2007-10-30 14:15:04 · answer #5 · answered by jigenlo 3 · 0⤊ 0⤋
2x^2 - 3x + 16x - 24
2x^2 + 13x - 24
2007-10-30 13:51:30 · answer #6 · answered by Ms. Exxclusive 5 · 1⤊ 1⤋
(x+8)(2x-3)
=2x^2-3x+16x-24
=2x^2+13x-24
2007-10-30 13:52:09 · answer #7 · answered by Grampedo 7 · 1⤊ 1⤋