Please solve question no.8.

Dear student, 
We know,p+q2=p-q2+4pqso,p+q2=92+436p+q2=81+144p+q2=225so, p+q=±15We knowp2-q2=p-qp+q             =915 or 9-15            =135 or -135    ANS...
Regards. 

  • 0
What are you looking for?