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Simplifying
30 = x2 * 3.14
Reorder the terms for easier multiplication:
30 = 3.14x2
Solving
30 = 3.14x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3.14x2' to each side of the equation.
30 + -3.14x2 = 3.14x2 + -3.14x2
Combine like terms: 3.14x2 + -3.14x2 = 0.00
30 + -3.14x2 = 0.00
Add '-30' to each side of the equation.
30 + -30 + -3.14x2 = 0.00 + -30
Combine like terms: 30 + -30 = 0
0 + -3.14x2 = 0.00 + -30
-3.14x2 = 0.00 + -30
Combine like terms: 0.00 + -30 = -30
-3.14x2 = -30
Divide each side by '-3.14'.
x2 = 9.554140127
Simplifying
x2 = 9.554140127
Take the square root of each side:
x = {-3.090977212, 3.090977212}
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