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Simplifying
4x2 + 15 = 115
Reorder the terms:
15 + 4x2 = 115
Solving
15 + 4x2 = 115
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-15' to each side of the equation.
15 + -15 + 4x2 = 115 + -15
Combine like terms: 15 + -15 = 0
0 + 4x2 = 115 + -15
4x2 = 115 + -15
Combine like terms: 115 + -15 = 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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