Question

Factorise 3x²-11x -70 (x-7)(3x+10), (x+7)(3x-10) ,(x+2)(x-10), (x-2)(3x-2)

Answer 1

Step-by-step explanation:

$3 {x}^{2} - 11x - 70 \\ 3 {x}^{2} - 21x + 10x - 70 \\ 3x(x -7) +10(x -7) \\ (3x + 10)(x - 7)$