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Simplifying 4x2 + 18x + 99 = 25 Reorder the terms: 99 + 18x + 4x2 = 25 Solving 99 + 18x + 4x2 = 25 Solving for variable 'x'. Reorder the terms: 99 + -25 + 18x + 4x2 = 25 + -25 Combine like terms: 99 + -25 = 74 74 + 18x + 4x2 = 25 + -25 Combine like terms: 25 + -25 = 0 74 + 18x + 4x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(37 + 9x + 2x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(37 + 9x + 2x2)' equal to zero and attempt to solve: Simplifying 37 + 9x + 2x2 = 0 Solving 37 + 9x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 18.5 + 4.5x + x2 = 0 Move the constant term to the right: Add '-18.5' to each side of the equation. 18.5 + 4.5x + -18.5 + x2 = 0 + -18.5 Reorder the terms: 18.5 + -18.5 + 4.5x + x2 = 0 + -18.5 Combine like terms: 18.5 + -18.5 = 0.0 0.0 + 4.5x + x2 = 0 + -18.5 4.5x + x2 = 0 + -18.5 Combine like terms: 0 + -18.5 = -18.5 4.5x + x2 = -18.5 The x term is 4.5x. Take half its coefficient (2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. 4.5x + 5.0625 + x2 = -18.5 + 5.0625 Reorder the terms: 5.0625 + 4.5x + x2 = -18.5 + 5.0625 Combine like terms: -18.5 + 5.0625 = -13.4375 5.0625 + 4.5x + x2 = -13.4375 Factor a perfect square on the left side: (x + 2.25)(x + 2.25) = -13.4375 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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