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Simplifying 8x2 + -36x + 405 = 0 Reorder the terms: 405 + -36x + 8x2 = 0 Solving 405 + -36x + 8x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. 50.625 + -4.5x + x2 = 0 Move the constant term to the right: Add '-50.625' to each side of the equation. 50.625 + -4.5x + -50.625 + x2 = 0 + -50.625 Reorder the terms: 50.625 + -50.625 + -4.5x + x2 = 0 + -50.625 Combine like terms: 50.625 + -50.625 = 0.000 0.000 + -4.5x + x2 = 0 + -50.625 -4.5x + x2 = 0 + -50.625 Combine like terms: 0 + -50.625 = -50.625 -4.5x + x2 = -50.625 The x term is -4.5x. Take half its coefficient (-2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. -4.5x + 5.0625 + x2 = -50.625 + 5.0625 Reorder the terms: 5.0625 + -4.5x + x2 = -50.625 + 5.0625 Combine like terms: -50.625 + 5.0625 = -45.5625 5.0625 + -4.5x + x2 = -45.5625 Factor a perfect square on the left side: (x + -2.25)(x + -2.25) = -45.5625 Can't calculate square root of the right side. The solution to this equation could not be determined.
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