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Simplifying -3x2 + -18x = 165 Reorder the terms: -18x + -3x2 = 165 Solving -18x + -3x2 = 165 Solving for variable 'x'. Reorder the terms: -165 + -18x + -3x2 = 165 + -165 Combine like terms: 165 + -165 = 0 -165 + -18x + -3x2 = 0 Factor out the Greatest Common Factor (GCF), '-3'. -3(55 + 6x + x2) = 0 Ignore the factor -3.Subproblem 1
Set the factor '(55 + 6x + x2)' equal to zero and attempt to solve: Simplifying 55 + 6x + x2 = 0 Solving 55 + 6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-55' to each side of the equation. 55 + 6x + -55 + x2 = 0 + -55 Reorder the terms: 55 + -55 + 6x + x2 = 0 + -55 Combine like terms: 55 + -55 = 0 0 + 6x + x2 = 0 + -55 6x + x2 = 0 + -55 Combine like terms: 0 + -55 = -55 6x + x2 = -55 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 = -55 + 9 Reorder the terms: 9 + 6x + x2 = -55 + 9 Combine like terms: -55 + 9 = -46 9 + 6x + x2 = -46 Factor a perfect square on the left side: (x + 3)(x + 3) = -46 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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