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Simplifying
2x2 + 2 = 84
Reorder the terms:
2 + 2x2 = 84
Solving
2 + 2x2 = 84
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-2' to each side of the equation.
2 + -2 + 2x2 = 84 + -2
Combine like terms: 2 + -2 = 0
0 + 2x2 = 84 + -2
2x2 = 84 + -2
Combine like terms: 84 + -2 = 82
2x2 = 82
Divide each side by '2'.
x2 = 41
Simplifying
x2 = 41
Take the square root of each side:
x = {-6.403124237, 6.403124237}
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