Question

factorisation of polynomial of 3x3+5x2-16x-12
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Answer 1

Answer:

factors of 12=+-1,+-2,+-3,+-4,+-6,+-12

Step-by-step explanation:

x+3 is a factor of f(x)

-81+45+48-12=0

3x^3+5x^2-16x-12=(x+3)(3x^2-4x-4)

factories=(x+3)(3x^2-6x+2x-4)= (x+3)[3x(x-2)+2(x-2)]

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