Q28 of 137 Page 102

Factorize:

x2 – 4x – 12

Given,


x2 – 4x – 12


Now first find the numbers whose-


Sum = - 4 and


Product = - 12


Required numbers are 6 and 2,


So we get;


x2 – 4x – 12


= x2 – 6x + 2x – 12


= x(x – 6) + 2(x – 6)


= (x – 6)(x + 2)


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