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Simplifying (x + 8)(x + 8) = 16 + -1x2 + 9x Reorder the terms: (8 + x)(x + 8) = 16 + -1x2 + 9x Reorder the terms: (8 + x)(8 + x) = 16 + -1x2 + 9x Multiply (8 + x) * (8 + x) (8(8 + x) + x(8 + x)) = 16 + -1x2 + 9x ((8 * 8 + x * 8) + x(8 + x)) = 16 + -1x2 + 9x ((64 + 8x) + x(8 + x)) = 16 + -1x2 + 9x (64 + 8x + (8 * x + x * x)) = 16 + -1x2 + 9x (64 + 8x + (8x + x2)) = 16 + -1x2 + 9x Combine like terms: 8x + 8x = 16x (64 + 16x + x2) = 16 + -1x2 + 9x Reorder the terms: 64 + 16x + x2 = 16 + 9x + -1x2 Solving 64 + 16x + x2 = 16 + 9x + -1x2 Solving for variable 'x'. Reorder the terms: 64 + -16 + 16x + -9x + x2 + x2 = 16 + 9x + -1x2 + -16 + -9x + x2 Combine like terms: 64 + -16 = 48 48 + 16x + -9x + x2 + x2 = 16 + 9x + -1x2 + -16 + -9x + x2 Combine like terms: 16x + -9x = 7x 48 + 7x + x2 + x2 = 16 + 9x + -1x2 + -16 + -9x + x2 Combine like terms: x2 + x2 = 2x2 48 + 7x + 2x2 = 16 + 9x + -1x2 + -16 + -9x + x2 Reorder the terms: 48 + 7x + 2x2 = 16 + -16 + 9x + -9x + -1x2 + x2 Combine like terms: 16 + -16 = 0 48 + 7x + 2x2 = 0 + 9x + -9x + -1x2 + x2 48 + 7x + 2x2 = 9x + -9x + -1x2 + x2 Combine like terms: 9x + -9x = 0 48 + 7x + 2x2 = 0 + -1x2 + x2 48 + 7x + 2x2 = -1x2 + x2 Combine like terms: -1x2 + x2 = 0 48 + 7x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 24 + 3.5x + x2 = 0 Move the constant term to the right: Add '-24' to each side of the equation. 24 + 3.5x + -24 + x2 = 0 + -24 Reorder the terms: 24 + -24 + 3.5x + x2 = 0 + -24 Combine like terms: 24 + -24 = 0 0 + 3.5x + x2 = 0 + -24 3.5x + x2 = 0 + -24 Combine like terms: 0 + -24 = -24 3.5x + x2 = -24 The x term is 3.5x. Take half its coefficient (1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. 3.5x + 3.0625 + x2 = -24 + 3.0625 Reorder the terms: 3.0625 + 3.5x + x2 = -24 + 3.0625 Combine like terms: -24 + 3.0625 = -20.9375 3.0625 + 3.5x + x2 = -20.9375 Factor a perfect square on the left side: (x + 1.75)(x + 1.75) = -20.9375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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