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Simplifying 84x2 + 42x + 6 = 0 Reorder the terms: 6 + 42x + 84x2 = 0 Solving 6 + 42x + 84x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '6'. 6(1 + 7x + 14x2) = 0 Ignore the factor 6.Subproblem 1
Set the factor '(1 + 7x + 14x2)' equal to zero and attempt to solve: Simplifying 1 + 7x + 14x2 = 0 Solving 1 + 7x + 14x2 = 0 Begin completing the square. Divide all terms by 14 the coefficient of the squared term: Divide each side by '14'. 0.07142857143 + 0.5x + x2 = 0 Move the constant term to the right: Add '-0.07142857143' to each side of the equation. 0.07142857143 + 0.5x + -0.07142857143 + x2 = 0 + -0.07142857143 Reorder the terms: 0.07142857143 + -0.07142857143 + 0.5x + x2 = 0 + -0.07142857143 Combine like terms: 0.07142857143 + -0.07142857143 = 0.00000000000 0.00000000000 + 0.5x + x2 = 0 + -0.07142857143 0.5x + x2 = 0 + -0.07142857143 Combine like terms: 0 + -0.07142857143 = -0.07142857143 0.5x + x2 = -0.07142857143 The x term is 0.5x. Take half its coefficient (0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. 0.5x + 0.0625 + x2 = -0.07142857143 + 0.0625 Reorder the terms: 0.0625 + 0.5x + x2 = -0.07142857143 + 0.0625 Combine like terms: -0.07142857143 + 0.0625 = -0.00892857143 0.0625 + 0.5x + x2 = -0.00892857143 Factor a perfect square on the left side: (x + 0.25)(x + 0.25) = -0.00892857143 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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