Question

Find th e value of M2+2mnp-n2 when m=1,n=-1,p=-2

Answer 1

Answer:

Given expression is,

2mn

4

−15m

2

n+p,

Substituting m=1, n=2 and p=−3, we get

2mn

4

−15m

2

n+p

=2(1)(2)

4

−15(1)

2

(2)+(−3)

=32−30−3

=−1