19.625=3.14*x*x

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Solution for 19.625=3.14*x*x equation:


Simplifying
19.625 = 3.14x * x

Multiply x * x
19.625 = 3.14x2

Solving
19.625 = 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.
19.625 + -3.14x2 = 3.14x2 + -3.14x2

Combine like terms: 3.14x2 + -3.14x2 = 0.00
19.625 + -3.14x2 = 0.00

Add '-19.625' to each side of the equation.
19.625 + -19.625 + -3.14x2 = 0.00 + -19.625

Combine like terms: 19.625 + -19.625 = 0.000
0.000 + -3.14x2 = 0.00 + -19.625
-3.14x2 = 0.00 + -19.625

Combine like terms: 0.00 + -19.625 = -19.625
-3.14x2 = -19.625

Divide each side by '-3.14'.
x2 = 6.25

Simplifying
x2 = 6.25

Take the square root of each side:
x = {-2.5, 2.5}

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