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Simplifying
4x2 + -12 = 388
Reorder the terms:
-12 + 4x2 = 388
Solving
-12 + 4x2 = 388
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '12' to each side of the equation.
-12 + 12 + 4x2 = 388 + 12
Combine like terms: -12 + 12 = 0
0 + 4x2 = 388 + 12
4x2 = 388 + 12
Combine like terms: 388 + 12 = 400
4x2 = 400
Divide each side by '4'.
x2 = 100
Simplifying
x2 = 100
Take the square root of each side:
x = {-10, 10}
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