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Simplifying
4x2 + -10 + 90 = 180
Reorder the terms:
-10 + 90 + 4x2 = 180
Combine like terms: -10 + 90 = 80
80 + 4x2 = 180
Solving
80 + 4x2 = 180
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-80' to each side of the equation.
80 + -80 + 4x2 = 180 + -80
Combine like terms: 80 + -80 = 0
0 + 4x2 = 180 + -80
4x2 = 180 + -80
Combine like terms: 180 + -80 = 100
4x2 = 100
Divide each side by '4'.
x2 = 25
Simplifying
x2 = 25
Take the square root of each side:
x = {-5, 5}
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