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Simplifying
81x2 + -10 = 15
Reorder the terms:
-10 + 81x2 = 15
Solving
-10 + 81x2 = 15
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '10' to each side of the equation.
-10 + 10 + 81x2 = 15 + 10
Combine like terms: -10 + 10 = 0
0 + 81x2 = 15 + 10
81x2 = 15 + 10
Combine like terms: 15 + 10 = 25
81x2 = 25
Divide each side by '81'.
x2 = 0.3086419753
Simplifying
x2 = 0.3086419753
Take the square root of each side:
x = {-0.555555556, 0.555555556}
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