Question

What is the value of m squared minus 2 m n + n squared for m = negative 2 and n = 4?

Answer 1

Explanation:

m = -2 ; n =4

m² - 2mn + n² = (-2)² - 2*(-2)*4 + 4²

= 4 + 16 + 16

= 36

Hint: (-2)² = -2 * -2 = 4

Answer 2

36

Explanation:

m^2 -2mn + n^2

Let m = -2 and n=4

(-2)^2 -2(-2)(4) + 4^2

4 +16 +16

36