Question

M в квадрате+2mn+n квадрате если m=-5, n=4

Answer 1

-5(квадрат)+2+(-5)*4+16= -25+2-20+16= -27

Answer 2

-5+2*(-5)*4+4=-5+(-40)+4=-45+4=-41

Answer 3

To evaluate the expression M^2 + 2mn + n^2 when m = -5 and n = 4, you simply substitute the values of m and n into the expression and perform the arithmetic.

Given: m = -5 n = 4

Now, let's substitute these values into the expression:

M^2 + 2mn + n^2

When m = -5 and n = 4, the expression becomes:

M^2 + 2(-5)(4) + 4^2

Now, perform the arithmetic:

M^2 + 2(-5)(4) + 4^2 M^2 + 2(-20) + 16 M^2 - 40 + 16 M^2 - 24

So, the simplified expression is M^2 - 24 when m = -5 and n = 4.