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Simplifying 4x(x + 1) = 8(x + -4) Reorder the terms: 4x(1 + x) = 8(x + -4) (1 * 4x + x * 4x) = 8(x + -4) (4x + 4x2) = 8(x + -4) Reorder the terms: 4x + 4x2 = 8(-4 + x) 4x + 4x2 = (-4 * 8 + x * 8) 4x + 4x2 = (-32 + 8x) Solving 4x + 4x2 = -32 + 8x Solving for variable 'x'. Reorder the terms: 32 + 4x + -8x + 4x2 = -32 + 8x + 32 + -8x Combine like terms: 4x + -8x = -4x 32 + -4x + 4x2 = -32 + 8x + 32 + -8x Reorder the terms: 32 + -4x + 4x2 = -32 + 32 + 8x + -8x Combine like terms: -32 + 32 = 0 32 + -4x + 4x2 = 0 + 8x + -8x 32 + -4x + 4x2 = 8x + -8x Combine like terms: 8x + -8x = 0 32 + -4x + 4x2 = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(8 + -1x + x2) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(8 + -1x + x2)' equal to zero and attempt to solve: Simplifying 8 + -1x + x2 = 0 Solving 8 + -1x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-8' to each side of the equation. 8 + -1x + -8 + x2 = 0 + -8 Reorder the terms: 8 + -8 + -1x + x2 = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x + x2 = 0 + -8 -1x + x2 = 0 + -8 Combine like terms: 0 + -8 = -8 -1x + x2 = -8 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = -8 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -8 + 0.25 Combine like terms: -8 + 0.25 = -7.75 0.25 + -1x + x2 = -7.75 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = -7.75 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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