10x^2 + 11x - 6
= 10x^2 + 15x - 4x - 6
= 5x(2x + 3) - 2(2x + 3)
= (5x - 2)(2x + 3) Thus the solution to
10x^2 + 11x - 6 = 0
is the solution to
(5x - 2)(2x + 3) = 0
which is
x = 2/5 or x = -3/2
= 10x^2 + 15x - 4x - 6
= 5x(2x + 3) - 2(2x + 3)
= (5x - 2)(2x + 3) Thus the solution to
10x^2 + 11x - 6 = 0
is the solution to
(5x - 2)(2x + 3) = 0
which is
x = 2/5 or x = -3/2