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Simplifying
-125 = -4x2 + 19
Reorder the terms:
-125 = 19 + -4x2
Solving
-125 = 19 + -4x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '4x2' to each side of the equation.
-125 + 4x2 = 19 + -4x2 + 4x2
Combine like terms: -4x2 + 4x2 = 0
-125 + 4x2 = 19 + 0
-125 + 4x2 = 19
Add '125' to each side of the equation.
-125 + 125 + 4x2 = 19 + 125
Combine like terms: -125 + 125 = 0
0 + 4x2 = 19 + 125
4x2 = 19 + 125
Combine like terms: 19 + 125 = 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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