30x^2-28x-6=0

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Solution for 30x^2-28x-6=0 equation:


Simplifying
30x2 + -28x + -6 = 0

Reorder the terms:
-6 + -28x + 30x2 = 0

Solving
-6 + -28x + 30x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-3 + -14x + 15x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-3 + -14x + 15x2)' equal to zero and attempt to solve: Simplifying -3 + -14x + 15x2 = 0 Solving -3 + -14x + 15x2 = 0 Begin completing the square. Divide all terms by 15 the coefficient of the squared term: Divide each side by '15'. -0.2 + -0.9333333333x + x2 = 0 Move the constant term to the right: Add '0.2' to each side of the equation. -0.2 + -0.9333333333x + 0.2 + x2 = 0 + 0.2 Reorder the terms: -0.2 + 0.2 + -0.9333333333x + x2 = 0 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + -0.9333333333x + x2 = 0 + 0.2 -0.9333333333x + x2 = 0 + 0.2 Combine like terms: 0 + 0.2 = 0.2 -0.9333333333x + x2 = 0.2 The x term is -0.9333333333x. Take half its coefficient (-0.4666666667). Square it (0.2177777778) and add it to both sides. Add '0.2177777778' to each side of the equation. -0.9333333333x + 0.2177777778 + x2 = 0.2 + 0.2177777778 Reorder the terms: 0.2177777778 + -0.9333333333x + x2 = 0.2 + 0.2177777778 Combine like terms: 0.2 + 0.2177777778 = 0.4177777778 0.2177777778 + -0.9333333333x + x2 = 0.4177777778 Factor a perfect square on the left side: (x + -0.4666666667)(x + -0.4666666667) = 0.4177777778 Calculate the square root of the right side: 0.646357314 Break this problem into two subproblems by setting (x + -0.4666666667) equal to 0.646357314 and -0.646357314.

Subproblem 1

x + -0.4666666667 = 0.646357314 Simplifying x + -0.4666666667 = 0.646357314 Reorder the terms: -0.4666666667 + x = 0.646357314 Solving -0.4666666667 + x = 0.646357314 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4666666667' to each side of the equation. -0.4666666667 + 0.4666666667 + x = 0.646357314 + 0.4666666667 Combine like terms: -0.4666666667 + 0.4666666667 = 0.0000000000 0.0000000000 + x = 0.646357314 + 0.4666666667 x = 0.646357314 + 0.4666666667 Combine like terms: 0.646357314 + 0.4666666667 = 1.1130239807 x = 1.1130239807 Simplifying x = 1.1130239807

Subproblem 2

x + -0.4666666667 = -0.646357314 Simplifying x + -0.4666666667 = -0.646357314 Reorder the terms: -0.4666666667 + x = -0.646357314 Solving -0.4666666667 + x = -0.646357314 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4666666667' to each side of the equation. -0.4666666667 + 0.4666666667 + x = -0.646357314 + 0.4666666667 Combine like terms: -0.4666666667 + 0.4666666667 = 0.0000000000 0.0000000000 + x = -0.646357314 + 0.4666666667 x = -0.646357314 + 0.4666666667 Combine like terms: -0.646357314 + 0.4666666667 = -0.1796906473 x = -0.1796906473 Simplifying x = -0.1796906473

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.1130239807, -0.1796906473}

Solution

x = {1.1130239807, -0.1796906473}

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