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Simplifying 2x2 + 36x + 720 = 0 Reorder the terms: 720 + 36x + 2x2 = 0 Solving 720 + 36x + 2x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(360 + 18x + x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(360 + 18x + x2)' equal to zero and attempt to solve: Simplifying 360 + 18x + x2 = 0 Solving 360 + 18x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-360' to each side of the equation. 360 + 18x + -360 + x2 = 0 + -360 Reorder the terms: 360 + -360 + 18x + x2 = 0 + -360 Combine like terms: 360 + -360 = 0 0 + 18x + x2 = 0 + -360 18x + x2 = 0 + -360 Combine like terms: 0 + -360 = -360 18x + x2 = -360 The x term is 18x. Take half its coefficient (9). Square it (81) and add it to both sides. Add '81' to each side of the equation. 18x + 81 + x2 = -360 + 81 Reorder the terms: 81 + 18x + x2 = -360 + 81 Combine like terms: -360 + 81 = -279 81 + 18x + x2 = -279 Factor a perfect square on the left side: (x + 9)(x + 9) = -279 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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