-2a^2+8=0

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


Simplifying
-2a2 + 8 = 0

Reorder the terms:
8 + -2a2 = 0

Solving
8 + -2a2 = 0

Solving for variable 'a'.

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

Add '-8' to each side of the equation.
8 + -8 + -2a2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -2a2 = 0 + -8
-2a2 = 0 + -8

Combine like terms: 0 + -8 = -8
-2a2 = -8

Divide each side by '-2'.
a2 = 4

Simplifying
a2 = 4

Take the square root of each side:
a = {-2, 2}

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