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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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