Question

3. If p = -2, q = -1 and r = 3, find the value of
(i) p2+ q2 – r2​

Answer 1

Answer:

p= -2,q = -1,r=3

p^2+q^2-r^2

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

=4+1-9

=5-9

= -4