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Simplifying 2x2 + -16x = -40 Reorder the terms: -16x + 2x2 = -40 Solving -16x + 2x2 = -40 Solving for variable 'x'. Reorder the terms: 40 + -16x + 2x2 = -40 + 40 Combine like terms: -40 + 40 = 0 40 + -16x + 2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(20 + -8x + x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(20 + -8x + x2)' equal to zero and attempt to solve: Simplifying 20 + -8x + x2 = 0 Solving 20 + -8x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-20' to each side of the equation. 20 + -8x + -20 + x2 = 0 + -20 Reorder the terms: 20 + -20 + -8x + x2 = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -8x + x2 = 0 + -20 -8x + x2 = 0 + -20 Combine like terms: 0 + -20 = -20 -8x + x2 = -20 The x term is -8x. Take half its coefficient (-4). Square it (16) and add it to both sides. Add '16' to each side of the equation. -8x + 16 + x2 = -20 + 16 Reorder the terms: 16 + -8x + x2 = -20 + 16 Combine like terms: -20 + 16 = -4 16 + -8x + x2 = -4 Factor a perfect square on the left side: (x + -4)(x + -4) = -4 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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