18a^2-12a-2=0

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Solution for 18a^2-12a-2=0 equation:


Simplifying
18a2 + -12a + -2 = 0

Reorder the terms:
-2 + -12a + 18a2 = 0

Solving
-2 + -12a + 18a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-1 + -6a + 9a2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-1 + -6a + 9a2)' equal to zero and attempt to solve: Simplifying -1 + -6a + 9a2 = 0 Solving -1 + -6a + 9a2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. -0.1111111111 + -0.6666666667a + a2 = 0 Move the constant term to the right: Add '0.1111111111' to each side of the equation. -0.1111111111 + -0.6666666667a + 0.1111111111 + a2 = 0 + 0.1111111111 Reorder the terms: -0.1111111111 + 0.1111111111 + -0.6666666667a + a2 = 0 + 0.1111111111 Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000 0.0000000000 + -0.6666666667a + a2 = 0 + 0.1111111111 -0.6666666667a + a2 = 0 + 0.1111111111 Combine like terms: 0 + 0.1111111111 = 0.1111111111 -0.6666666667a + a2 = 0.1111111111 The a term is -0.6666666667a. Take half its coefficient (-0.3333333334). Square it (0.1111111112) and add it to both sides. Add '0.1111111112' to each side of the equation. -0.6666666667a + 0.1111111112 + a2 = 0.1111111111 + 0.1111111112 Reorder the terms: 0.1111111112 + -0.6666666667a + a2 = 0.1111111111 + 0.1111111112 Combine like terms: 0.1111111111 + 0.1111111112 = 0.2222222223 0.1111111112 + -0.6666666667a + a2 = 0.2222222223 Factor a perfect square on the left side: (a + -0.3333333334)(a + -0.3333333334) = 0.2222222223 Calculate the square root of the right side: 0.471404521 Break this problem into two subproblems by setting (a + -0.3333333334) equal to 0.471404521 and -0.471404521.

Subproblem 1

a + -0.3333333334 = 0.471404521 Simplifying a + -0.3333333334 = 0.471404521 Reorder the terms: -0.3333333334 + a = 0.471404521 Solving -0.3333333334 + a = 0.471404521 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + a = 0.471404521 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + a = 0.471404521 + 0.3333333334 a = 0.471404521 + 0.3333333334 Combine like terms: 0.471404521 + 0.3333333334 = 0.8047378544 a = 0.8047378544 Simplifying a = 0.8047378544

Subproblem 2

a + -0.3333333334 = -0.471404521 Simplifying a + -0.3333333334 = -0.471404521 Reorder the terms: -0.3333333334 + a = -0.471404521 Solving -0.3333333334 + a = -0.471404521 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + a = -0.471404521 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + a = -0.471404521 + 0.3333333334 a = -0.471404521 + 0.3333333334 Combine like terms: -0.471404521 + 0.3333333334 = -0.1380711876 a = -0.1380711876 Simplifying a = -0.1380711876

Solution

The solution to the problem is based on the solutions from the subproblems. a = {0.8047378544, -0.1380711876}

Solution

a = {0.8047378544, -0.1380711876}

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