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Simplifying 64x2 + 81 = 90x Reorder the terms: 81 + 64x2 = 90x Solving 81 + 64x2 = 90x Solving for variable 'x'. Reorder the terms: 81 + -90x + 64x2 = 90x + -90x Combine like terms: 90x + -90x = 0 81 + -90x + 64x2 = 0 Begin completing the square. Divide all terms by 64 the coefficient of the squared term: Divide each side by '64'. 1.265625 + -1.40625x + x2 = 0 Move the constant term to the right: Add '-1.265625' to each side of the equation. 1.265625 + -1.40625x + -1.265625 + x2 = 0 + -1.265625 Reorder the terms: 1.265625 + -1.265625 + -1.40625x + x2 = 0 + -1.265625 Combine like terms: 1.265625 + -1.265625 = 0.000000 0.000000 + -1.40625x + x2 = 0 + -1.265625 -1.40625x + x2 = 0 + -1.265625 Combine like terms: 0 + -1.265625 = -1.265625 -1.40625x + x2 = -1.265625 The x term is -1.40625x. Take half its coefficient (-0.703125). Square it (0.4943847656) and add it to both sides. Add '0.4943847656' to each side of the equation. -1.40625x + 0.4943847656 + x2 = -1.265625 + 0.4943847656 Reorder the terms: 0.4943847656 + -1.40625x + x2 = -1.265625 + 0.4943847656 Combine like terms: -1.265625 + 0.4943847656 = -0.7712402344 0.4943847656 + -1.40625x + x2 = -0.7712402344 Factor a perfect square on the left side: (x + -0.703125)(x + -0.703125) = -0.7712402344 Can't calculate square root of the right side. The solution to this equation could not be determined.
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