-7m^2+8m-5+4m^2-8m+8=

Solution for -7m^2+8m-5+4m^2-8m+8= equation:

Simplifying
-7m2 + 8m + -5 + 4m2 + -8m + 8 = 0

Reorder the terms:
-5 + 8 + 8m + -8m + -7m2 + 4m2 = 0

Combine like terms: -5 + 8 = 3
3 + 8m + -8m + -7m2 + 4m2 = 0

Combine like terms: 8m + -8m = 0
3 + 0 + -7m2 + 4m2 = 0
3 + -7m2 + 4m2 = 0

Combine like terms: -7m2 + 4m2 = -3m2
3 + -3m2 = 0

Solving
3 + -3m2 = 0

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + -3m2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -3m2 = 0 + -3
-3m2 = 0 + -3

Combine like terms: 0 + -3 = -3
-3m2 = -3

Divide each side by '-3'.
m2 = 1

Simplifying
m2 = 1

Take the square root of each side:
m = {-1, 1}