Question

factorise 3x³ + 5x²-16 - 12​

Answer 1

$\large{\underline{\underline{\bold{\red{\sf{Bonjour !}}}}}}$

3x³ + 5x²-16 x- 12

(x-3)(3x²+4x-4)

(x-3)(3x²+6x-2x-4)

(x-3)(3x-2)(x+2)

x=3,2/3,-2

$\large{\bold{\blue{\sf{thanks}}}}$