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Simplifying 4X2 + 16X + 18 = 0 Reorder the terms: 18 + 16X + 4X2 = 0 Solving 18 + 16X + 4X2 = 0 Solving for variable 'X'. Factor out the Greatest Common Factor (GCF), '2'. 2(9 + 8X + 2X2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(9 + 8X + 2X2)' equal to zero and attempt to solve: Simplifying 9 + 8X + 2X2 = 0 Solving 9 + 8X + 2X2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 4.5 + 4X + X2 = 0 Move the constant term to the right: Add '-4.5' to each side of the equation. 4.5 + 4X + -4.5 + X2 = 0 + -4.5 Reorder the terms: 4.5 + -4.5 + 4X + X2 = 0 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + 4X + X2 = 0 + -4.5 4X + X2 = 0 + -4.5 Combine like terms: 0 + -4.5 = -4.5 4X + X2 = -4.5 The X term is 4X. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4X + 4 + X2 = -4.5 + 4 Reorder the terms: 4 + 4X + X2 = -4.5 + 4 Combine like terms: -4.5 + 4 = -0.5 4 + 4X + X2 = -0.5 Factor a perfect square on the left side: (X + 2)(X + 2) = -0.5 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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