a^2+7-8=0

Solution for a^2+7-8=0 equation:

Simplifying
a2 + 7 + -8 = 0

Reorder the terms:
7 + -8 + a2 = 0

Combine like terms: 7 + -8 = -1
-1 + a2 = 0

Solving
-1 + a2 = 0

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + a2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + a2 = 0 + 1
a2 = 0 + 1

Combine like terms: 0 + 1 = 1
a2 = 1

Simplifying
a2 = 1

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