Question

if p= -2q= -1 and r =3 , find the value of : p2 + q2 - r2

Answer 1

Heya friend,

p^2 + q^2 - r^2

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

= 4 + 1 - 9

= 5 - 9

= -4




Thanks

With regards@

Tanisha

Answer 2

p=-1
q=1/2
r=3
p2+q2-r2=(-1)2+(1/2)2-3(2)
              = 1+1/4-9
                =-31/4
all the best