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Simplifying
2x2 + -7 = 23
Reorder the terms:
-7 + 2x2 = 23
Solving
-7 + 2x2 = 23
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 = 23 + 7
Combine like terms: -7 + 7 = 0
0 + 2x2 = 23 + 7
2x2 = 23 + 7
Combine like terms: 23 + 7 = 30
2x2 = 30
Divide each side by '2'.
x2 = 15
Simplifying
x2 = 15
Take the square root of each side:
x = {-3.872983346, 3.872983346}
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