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Simplifying
4x2 = x2 + 135
Reorder the terms:
4x2 = 135 + x2
Solving
4x2 = 135 + x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1x2' to each side of the equation.
4x2 + -1x2 = 135 + x2 + -1x2
Combine like terms: 4x2 + -1x2 = 3x2
3x2 = 135 + x2 + -1x2
Combine like terms: x2 + -1x2 = 0
3x2 = 135 + 0
3x2 = 135
Divide each side by '3'.
x2 = 45
Simplifying
x2 = 45
Take the square root of each side:
x = {-6.708203933, 6.708203933}
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