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Simplifying
4a2 + -8 = 9
Reorder the terms:
-8 + 4a2 = 9
Solving
-8 + 4a2 = 9
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 + 4a2 = 9 + 8
Combine like terms: -8 + 8 = 0
0 + 4a2 = 9 + 8
4a2 = 9 + 8
Combine like terms: 9 + 8 = 17
4a2 = 17
Divide each side by '4'.
a2 = 4.25
Simplifying
a2 = 4.25
Take the square root of each side:
a = {-2.061552813, 2.061552813}
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