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Simplifying
2x2 + 7 = 31
Reorder the terms:
7 + 2x2 = 31
Solving
7 + 2x2 = 31
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 = 31 + -7
Combine like terms: 7 + -7 = 0
0 + 2x2 = 31 + -7
2x2 = 31 + -7
Combine like terms: 31 + -7 = 24
2x2 = 24
Divide each side by '2'.
x2 = 12
Simplifying
x2 = 12
Take the square root of each side:
x = {-3.464101615, 3.464101615}
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