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Simplifying
4x2 + -328 = 72
Reorder the terms:
-328 + 4x2 = 72
Solving
-328 + 4x2 = 72
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '328' to each side of the equation.
-328 + 328 + 4x2 = 72 + 328
Combine like terms: -328 + 328 = 0
0 + 4x2 = 72 + 328
4x2 = 72 + 328
Combine like terms: 72 + 328 = 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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