Q26 of 137 Page 102

Factorize:

y2 – 6y – 135

Given;


y2 – 6y – 135


Now first find the numbers whose-


Sum = - 6 and


Product = - 135


Required numbers are 15 and 9,


So we get;


y2 – 6y – 135


= y2 – 15y + 9y – 135


= y(y – 15) + 9(y – 15)


= (y – 15)(y + 9)


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