Factorise:
Question:

Factorise:
x2 + x − 132Factorise:

x2 + x − 132

Solution:

The given expression is $x^{2}+x-132$.

Find two numbers that follow the conditions given below:

Sum $=1$

Product $=-132$

Clearly, the numbers are 12 and $-11$.

$x^{2}+x-132=x^{2}+12 x-11 x-132$

$=x(x+12)-11(x+12)$

$=(x+12)(x-11)$