Question

10x2+11x-6


A.(10x-6)(5x+1)

B.(5x+2)(6x-5)

C.(x-3)(10x+2)

D.(5x-2)(2x+3)

Answer 1

10x^2 - 11x - 6 = 0

10 x (-6) = -60
so u need two numbers one which add to give -11 and multiply to give
(-60)
In this case we can use -15 and 4
so we replace the middle number by these two.. or i.e. break up the middle number ..

10x^2 - 15x + 4x -6
= 5x ( 2x - 3) + 2 ( 2x - 3)
= (5x + 2)(2x + 3)

Answer 2

the answer is D. (5x-2) (2x+3)