Q18 of 137 Page 102

Factorize:

y2 + 7y – 144

y2 + 7y – 144


Now, first we have to find out the numbers whose-


Sum = 7 and


Product = - 144


The numbers are 16 and - 9,


So,


y2 + 7y – 144


= y2 + 16y – 9y – 144


= y(y + 16) – 9(y + 16)


= (y + 16)(y – 9)


More from this chapter

All 137 →
16

Factorize:

x2 + x – 132

 17

Factorize:

x2 + 5x – 104

 19

Factorize:

z2 + 19z – 150

 20

Factorize:

y2 + y – 72