given that m=5 and n=-2, what is the value of expression n(mn+n*2)

Question

n(mn+n2)

 

Answer 1

= -2[5(-2) + (-2)^2] = -2(-10 + 4) = -2(-6) = 12.

 

I assume that's what was intended; in your title line you wrote n*2 but I believe you meant n squared.

Answer 2

n(mn + n²) ; m = 5, n = -2

 

= -2((5(-2) + (-2)²)

 

= -2(-10 + 4)

 

= -2(-6)

 

= 12