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Simplifying -3x + -9 + 15x2 = 0 Reorder the terms: -9 + -3x + 15x2 = 0 Solving -9 + -3x + 15x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '3'. 3(-3 + -1x + 5x2) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-3 + -1x + 5x2)' equal to zero and attempt to solve: Simplifying -3 + -1x + 5x2 = 0 Solving -3 + -1x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -0.6 + -0.2x + x2 = 0 Move the constant term to the right: Add '0.6' to each side of the equation. -0.6 + -0.2x + 0.6 + x2 = 0 + 0.6 Reorder the terms: -0.6 + 0.6 + -0.2x + x2 = 0 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + -0.2x + x2 = 0 + 0.6 -0.2x + x2 = 0 + 0.6 Combine like terms: 0 + 0.6 = 0.6 -0.2x + x2 = 0.6 The x term is -0.2x. Take half its coefficient (-0.1). Square it (0.01) and add it to both sides. Add '0.01' to each side of the equation. -0.2x + 0.01 + x2 = 0.6 + 0.01 Reorder the terms: 0.01 + -0.2x + x2 = 0.6 + 0.01 Combine like terms: 0.6 + 0.01 = 0.61 0.01 + -0.2x + x2 = 0.61 Factor a perfect square on the left side: (x + -0.1)(x + -0.1) = 0.61 Calculate the square root of the right side: 0.781024968 Break this problem into two subproblems by setting (x + -0.1) equal to 0.781024968 and -0.781024968.Subproblem 1
x + -0.1 = 0.781024968 Simplifying x + -0.1 = 0.781024968 Reorder the terms: -0.1 + x = 0.781024968 Solving -0.1 + x = 0.781024968 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1' to each side of the equation. -0.1 + 0.1 + x = 0.781024968 + 0.1 Combine like terms: -0.1 + 0.1 = 0.0 0.0 + x = 0.781024968 + 0.1 x = 0.781024968 + 0.1 Combine like terms: 0.781024968 + 0.1 = 0.881024968 x = 0.881024968 Simplifying x = 0.881024968Subproblem 2
x + -0.1 = -0.781024968 Simplifying x + -0.1 = -0.781024968 Reorder the terms: -0.1 + x = -0.781024968 Solving -0.1 + x = -0.781024968 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1' to each side of the equation. -0.1 + 0.1 + x = -0.781024968 + 0.1 Combine like terms: -0.1 + 0.1 = 0.0 0.0 + x = -0.781024968 + 0.1 x = -0.781024968 + 0.1 Combine like terms: -0.781024968 + 0.1 = -0.681024968 x = -0.681024968 Simplifying x = -0.681024968Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.881024968, -0.681024968}Solution
x = {0.881024968, -0.681024968}
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