Question

simplify the following and verify the result for the given values.
1) (p²+q²+r²) (pq+qr);p=2,q=-3,r=1
plz slove this......​

Answer 1

Answer:

-98

Step-by-step explanation:

=(2^2+(-3)^2+1^2)*(2(-3)+(-3)1)

=(4+9+1)*(-6-1)

=14*(-7)

=-98