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Simplifying
8x2 + 16 + -90 = 0
Reorder the terms:
16 + -90 + 8x2 = 0
Combine like terms: 16 + -90 = -74
-74 + 8x2 = 0
Solving
-74 + 8x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '74' to each side of the equation.
-74 + 74 + 8x2 = 0 + 74
Combine like terms: -74 + 74 = 0
0 + 8x2 = 0 + 74
8x2 = 0 + 74
Combine like terms: 0 + 74 = 74
8x2 = 74
Divide each side by '8'.
x2 = 9.25
Simplifying
x2 = 9.25
Take the square root of each side:
x = {-3.041381265, 3.041381265}
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