Factorise: x2 + x – 132 – InterviewSolution

1.	Factorise: x2 + x – 132
Answer» First find the two numbers whose sum= 1 and product= -132 Clearly, the numbers are 12 and 11 ∴ we get, x² + x – 132 = x²+ 12x – 11x – 132 = x(x+12) – 11(x+12) = (x+12) (x-11)

Factorise: x2 + x – 132

Answer»

First find the two numbers whose sum= 1 and product= -132

Clearly, the numbers are 12 and 11

∴ we get, x² + x – 132

= x²+ 12x – 11x – 132

= x(x+12) – 11(x+12)

= (x+12) (x-11)