Question

If 3p+q=13 and pq= 9, Find the value of 9p^2+q^2.

steps please

Answer 1

Step-by-step explanation:

3p+q=13

sobs

(3p+q)^2=169

9p^2+q^2+6pq=169

9p^2+q^2=169-6pq

=169-6*9

=169-54

=115