Question

What is the value of m2-2mn+n2for m=-2and n=4

Answer 1

8

Explanation:

m2 - 2mn + n2 ,m = -2 and n = 4

= -2( 2 ) - 2( -2 )( 4 ) + ( -2 )2

= -4 + 4( 4 ) - 4

= -4 + 16 - 4

= 8