How in the world do you simplify this!! I have no clue how to do it?
(4x-3)(5x^2+3x-2)
Take me step by step please!
2007-07-10 07:23:25 · 3 answers · asked by Brenda m 1 in Science & Mathematics ➔ Mathematics
(4x - 3)(5x^2 + 3x - 2)
= (4x - 3)(5x^2 + 5x - 2x - 2)
= (4x - 3)[5x(x + 1) - 2(x + 1)]
= (4x - 3)(x + 1)(5x - 2)
This is called factorization.
2007-07-10 07:27:47 · answer #1 · answered by psbhowmick 6 · 0⤊ 0⤋
Find your factor for the first and last term for the trinomial.
1, 5 and 1, 2
Now find a combination that will give you +3:
5*1 - 2*1 = 3
(4x - 3)(5x - 2)(x + 1)
2007-07-10 14:27:30 · answer #2 · answered by Becky M 4 · 0⤊ 0⤋
Consider (5x² + 3x - 2)
Factors of 5x² are 5x and x:-
(5x----).(x-----)
Now require factors of 2 and these can only be 2 and 1 or 1 and 2 (with appropriate signs).
Trial and error gives - 2 and + 1:-
- 2x + 5x = 3x
(4x - 3) (5x - 2) (x + 1) are required factors.
2007-07-10 14:50:43 · answer #3 · answered by Como 7 · 0⤊ 0⤋