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Simplifying -1x2 + -6x + -40 = 0 Reorder the terms: -40 + -6x + -1x2 = 0 Solving -40 + -6x + -1x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '-1'. -1(40 + 6x + x2) = 0 Ignore the factor -1.Subproblem 1
Set the factor '(40 + 6x + x2)' equal to zero and attempt to solve: Simplifying 40 + 6x + x2 = 0 Solving 40 + 6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-40' to each side of the equation. 40 + 6x + -40 + x2 = 0 + -40 Reorder the terms: 40 + -40 + 6x + x2 = 0 + -40 Combine like terms: 40 + -40 = 0 0 + 6x + x2 = 0 + -40 6x + x2 = 0 + -40 Combine like terms: 0 + -40 = -40 6x + x2 = -40 The x term is 6x. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6x + 9 + x2 = -40 + 9 Reorder the terms: 9 + 6x + x2 = -40 + 9 Combine like terms: -40 + 9 = -31 9 + 6x + x2 = -31 Factor a perfect square on the left side: (x + 3)(x + 3) = -31 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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