6x^2 -15x -9 . .. . . 4x^2 +2x
__________ ÷ .. . _______
2x^2 +2x - 24 . . .. . x^2 +4x
2007-01-26 10:30:47 · 3 answers · asked by Doug 2 in Science & Mathematics ➔ Mathematics
6x^2 - 15x - 9 = 3(2x + 1)(x -3)
2x^2 + 2x - 24 = 2(x + 4)(x - 3)
4x^2 + 2x = 2x(2x + 1)
x^2 + 4x = x(x+4)
If you have a/b divided by c/d, it becomes a/b * d/c
So, now you have:
3(2x + 1)(x -3) * x(x+4)
-------------------------------------------
2(x + 4)(x - 3) * 2x(2x + 1)
Cancel like terms from the top and bottom and you're left with:
3/4
2007-01-26 10:38:42 · answer #1 · answered by Mathematica 7 · 0⤊ 0⤋
Break each term into factors
Multiply the two fractions (inverse one to get the division effect)
2007-01-26 18:34:27 · answer #2 · answered by mdigitale 7 · 0⤊ 0⤋
ok for number one yahoomail is not for kids are pre-teensstupid don`t be on my space#%^@*##.
2007-01-26 18:36:35 · answer #3 · answered by zanisha11 1 · 0⤊ 0⤋