Q22 of 137 Page 102

Factorize:

p2 – 4p – 77

p2 – 4p – 77


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


Sum = - 4 and


Product = - 77


The numbers are 11 and 7,


So,


p2 – 4p – 77


= p2 – 11p + 7p – 77


= p(p – 11) + 7(p – 11)


= (p – 11)(p + 7)


More from this chapter

All 137 →
20

Factorize:

y2 + y – 72

 21

Factorize:

a2 + 6a – 91

 23

Factorize:

x2 – 7x – 30

 24

Factorize:

x2 – 11x – 42