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Simplifying 12 + -1(2 + -1x * x) = 5x + 2 Multiply x * x 12 + -1(2 + -1x2) = 5x + 2 12 + (2 * -1 + -1x2 * -1) = 5x + 2 12 + (-2 + 1x2) = 5x + 2 Combine like terms: 12 + -2 = 10 10 + 1x2 = 5x + 2 Reorder the terms: 10 + 1x2 = 2 + 5x Solving 10 + 1x2 = 2 + 5x Solving for variable 'x'. Reorder the terms: 10 + -2 + -5x + 1x2 = 2 + 5x + -2 + -5x Combine like terms: 10 + -2 = 8 8 + -5x + 1x2 = 2 + 5x + -2 + -5x Reorder the terms: 8 + -5x + 1x2 = 2 + -2 + 5x + -5x Combine like terms: 2 + -2 = 0 8 + -5x + 1x2 = 0 + 5x + -5x 8 + -5x + 1x2 = 5x + -5x Combine like terms: 5x + -5x = 0 8 + -5x + 1x2 = 0 Begin completing the square. Move the constant term to the right: Add '-8' to each side of the equation. 8 + -5x + -8 + x2 = 0 + -8 Reorder the terms: 8 + -8 + -5x + x2 = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -5x + x2 = 0 + -8 -5x + x2 = 0 + -8 Combine like terms: 0 + -8 = -8 -5x + x2 = -8 The x term is -5x. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5x + 6.25 + x2 = -8 + 6.25 Reorder the terms: 6.25 + -5x + x2 = -8 + 6.25 Combine like terms: -8 + 6.25 = -1.75 6.25 + -5x + x2 = -1.75 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = -1.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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