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Simplifying
4x2 + 83 = 99
Reorder the terms:
83 + 4x2 = 99
Solving
83 + 4x2 = 99
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-83' to each side of the equation.
83 + -83 + 4x2 = 99 + -83
Combine like terms: 83 + -83 = 0
0 + 4x2 = 99 + -83
4x2 = 99 + -83
Combine like terms: 99 + -83 = 16
4x2 = 16
Divide each side by '4'.
x2 = 4
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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