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Simplifying x2 + -16x + 86 = -8 Reorder the terms: 86 + -16x + x2 = -8 Solving 86 + -16x + x2 = -8 Solving for variable 'x'. Reorder the terms: 86 + 8 + -16x + x2 = -8 + 8 Combine like terms: 86 + 8 = 94 94 + -16x + x2 = -8 + 8 Combine like terms: -8 + 8 = 0 94 + -16x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-94' to each side of the equation. 94 + -16x + -94 + x2 = 0 + -94 Reorder the terms: 94 + -94 + -16x + x2 = 0 + -94 Combine like terms: 94 + -94 = 0 0 + -16x + x2 = 0 + -94 -16x + x2 = 0 + -94 Combine like terms: 0 + -94 = -94 -16x + x2 = -94 The x term is -16x. Take half its coefficient (-8). Square it (64) and add it to both sides. Add '64' to each side of the equation. -16x + 64 + x2 = -94 + 64 Reorder the terms: 64 + -16x + x2 = -94 + 64 Combine like terms: -94 + 64 = -30 64 + -16x + x2 = -30 Factor a perfect square on the left side: (x + -8)(x + -8) = -30 Can't calculate square root of the right side. The solution to this equation could not be determined.
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