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Simplifying
15x2 = 64
Solving
15x2 = 64
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '15'.
x2 = 4.266666667
Simplifying
x2 = 4.266666667
Take the square root of each side:
x = {-2.065591118, 2.065591118}
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