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Simplifying
8x2 + -64 = -40
Reorder the terms:
-64 + 8x2 = -40
Solving
-64 + 8x2 = -40
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '64' to each side of the equation.
-64 + 64 + 8x2 = -40 + 64
Combine like terms: -64 + 64 = 0
0 + 8x2 = -40 + 64
8x2 = -40 + 64
Combine like terms: -40 + 64 = 24
8x2 = 24
Divide each side by '8'.
x2 = 3
Simplifying
x2 = 3
Take the square root of each side:
x = {-1.732050808, 1.732050808}
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