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Simplifying 15x3 + 27x2 + 30x = 0 Reorder the terms: 30x + 27x2 + 15x3 = 0 Solving 30x + 27x2 + 15x3 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '3x'. 3x(10 + 9x + 5x2) = 0 Ignore the factor 3.Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(10 + 9x + 5x2)' equal to zero and attempt to solve: Simplifying 10 + 9x + 5x2 = 0 Solving 10 + 9x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 2 + 1.8x + x2 = 0 Move the constant term to the right: Add '-2' to each side of the equation. 2 + 1.8x + -2 + x2 = 0 + -2 Reorder the terms: 2 + -2 + 1.8x + x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 1.8x + x2 = 0 + -2 1.8x + x2 = 0 + -2 Combine like terms: 0 + -2 = -2 1.8x + x2 = -2 The x term is 1.8x. Take half its coefficient (0.9). Square it (0.81) and add it to both sides. Add '0.81' to each side of the equation. 1.8x + 0.81 + x2 = -2 + 0.81 Reorder the terms: 0.81 + 1.8x + x2 = -2 + 0.81 Combine like terms: -2 + 0.81 = -1.19 0.81 + 1.8x + x2 = -1.19 Factor a perfect square on the left side: (x + 0.9)(x + 0.9) = -1.19 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.Solution
x = {0}
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