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Simplifying
2x * x + 7 = 120
Multiply x * x
2x2 + 7 = 120
Reorder the terms:
7 + 2x2 = 120
Solving
7 + 2x2 = 120
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-7' to each side of the equation.
7 + -7 + 2x2 = 120 + -7
Combine like terms: 7 + -7 = 0
0 + 2x2 = 120 + -7
2x2 = 120 + -7
Combine like terms: 120 + -7 = 113
2x2 = 113
Divide each side by '2'.
x2 = 56.5
Simplifying
x2 = 56.5
Take the square root of each side:
x = {-7.516648189, 7.516648189}
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