Question

I made a mistake! find the value of 5[p-q-s square] - 2[r-s square] if p= -1 , q = -2 , r = 3 , s = -2

Answer 1

5[(-1)-(-2)-(4)] - 2[(3)-(4)]
5(-1+2-4) - 2(3-4)
5(-5+2) - 2(3-4)
5(-3) - 2(-1)
(-15) - (-2)
-15 + 2
-13