Question

factorise the polynomial​

Answer 1

Answer:

x = - 3 , - 4 ans.

Step-by-step explanation:

x² + 7x + 12

x² + 3x + 4x + 12

x ( x + 3 ) + 4 ( x + 3 )

(x + 4)(x + 3)

x + 4 = 0 x + 3 = 0

x = - 4 x = - 3

x = - 3 , - 4 ans.

Answer 2

It can be written as x2+7x+12=x2+3x+4x+12

=x(x+3)+4(x+3)

=(x+3)(x+4)