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Simplifying
4x2 + -40 = 104
Reorder the terms:
-40 + 4x2 = 104
Solving
-40 + 4x2 = 104
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '40' to each side of the equation.
-40 + 40 + 4x2 = 104 + 40
Combine like terms: -40 + 40 = 0
0 + 4x2 = 104 + 40
4x2 = 104 + 40
Combine like terms: 104 + 40 = 144
4x2 = 144
Divide each side by '4'.
x2 = 36
Simplifying
x2 = 36
Take the square root of each side:
x = {-6, 6}
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