Question

Factorise:
(a) 2x²+ 12x + 72​

Answer 1

Answer:

2x^2-24x+72

=2x^2-12x-12x+72

=2x(x-6)-12(x-6)

=(2x-12)(x-6)

Hope itis helpful.

Answer 2

Answer:

Step-by-step explanation:

2x²+12x+72

2(x²+6x+36)=0

x²+6x+36=0

x²+6x= -36

x²+6x+9= -27

x²+6x+9= (x+3)²

now,

(x+3)²= -27

x+3=√-27

x+3=√27

now,

x=3-√27

either,

x=3+√27