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Simplifying 4x * 4x + -20x + 25 = 0 Reorder the terms for easier multiplication: 4 * 4x * x + -20x + 25 = 0 Multiply 4 * 4 16x * x + -20x + 25 = 0 Multiply x * x 16x2 + -20x + 25 = 0 Reorder the terms: 25 + -20x + 16x2 = 0 Solving 25 + -20x + 16x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. 1.5625 + -1.25x + x2 = 0 Move the constant term to the right: Add '-1.5625' to each side of the equation. 1.5625 + -1.25x + -1.5625 + x2 = 0 + -1.5625 Reorder the terms: 1.5625 + -1.5625 + -1.25x + x2 = 0 + -1.5625 Combine like terms: 1.5625 + -1.5625 = 0.0000 0.0000 + -1.25x + x2 = 0 + -1.5625 -1.25x + x2 = 0 + -1.5625 Combine like terms: 0 + -1.5625 = -1.5625 -1.25x + x2 = -1.5625 The x term is -1.25x. Take half its coefficient (-0.625). Square it (0.390625) and add it to both sides. Add '0.390625' to each side of the equation. -1.25x + 0.390625 + x2 = -1.5625 + 0.390625 Reorder the terms: 0.390625 + -1.25x + x2 = -1.5625 + 0.390625 Combine like terms: -1.5625 + 0.390625 = -1.171875 0.390625 + -1.25x + x2 = -1.171875 Factor a perfect square on the left side: (x + -0.625)(x + -0.625) = -1.171875 Can't calculate square root of the right side. The solution to this equation could not be determined.
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