2a^2-0.06a-0.0846=0

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Solution for 2a^2-0.06a-0.0846=0 equation:


Simplifying
2a2 + -0.06a + -0.0846 = 0

Reorder the terms:
-0.0846 + -0.06a + 2a2 = 0

Solving
-0.0846 + -0.06a + 2a2 = 0

Solving for variable 'a'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-0.0423 + -0.03a + a2 = 0

Move the constant term to the right:

Add '0.0423' to each side of the equation.
-0.0423 + -0.03a + 0.0423 + a2 = 0 + 0.0423

Reorder the terms:
-0.0423 + 0.0423 + -0.03a + a2 = 0 + 0.0423

Combine like terms: -0.0423 + 0.0423 = 0.0000
0.0000 + -0.03a + a2 = 0 + 0.0423
-0.03a + a2 = 0 + 0.0423

Combine like terms: 0 + 0.0423 = 0.0423
-0.03a + a2 = 0.0423

The a term is -0.03a.  Take half its coefficient (-0.015).
Square it (0.000225) and add it to both sides.

Add '0.000225' to each side of the equation.
-0.03a + 0.000225 + a2 = 0.0423 + 0.000225

Reorder the terms:
0.000225 + -0.03a + a2 = 0.0423 + 0.000225

Combine like terms: 0.0423 + 0.000225 = 0.042525
0.000225 + -0.03a + a2 = 0.042525

Factor a perfect square on the left side:
(a + -0.015)(a + -0.015) = 0.042525

Calculate the square root of the right side: 0.206215906

Break this problem into two subproblems by setting 
(a + -0.015) equal to 0.206215906 and -0.206215906.

Subproblem 1

a + -0.015 = 0.206215906 Simplifying a + -0.015 = 0.206215906 Reorder the terms: -0.015 + a = 0.206215906 Solving -0.015 + a = 0.206215906 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.015' to each side of the equation. -0.015 + 0.015 + a = 0.206215906 + 0.015 Combine like terms: -0.015 + 0.015 = 0.000 0.000 + a = 0.206215906 + 0.015 a = 0.206215906 + 0.015 Combine like terms: 0.206215906 + 0.015 = 0.221215906 a = 0.221215906 Simplifying a = 0.221215906

Subproblem 2

a + -0.015 = -0.206215906 Simplifying a + -0.015 = -0.206215906 Reorder the terms: -0.015 + a = -0.206215906 Solving -0.015 + a = -0.206215906 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.015' to each side of the equation. -0.015 + 0.015 + a = -0.206215906 + 0.015 Combine like terms: -0.015 + 0.015 = 0.000 0.000 + a = -0.206215906 + 0.015 a = -0.206215906 + 0.015 Combine like terms: -0.206215906 + 0.015 = -0.191215906 a = -0.191215906 Simplifying a = -0.191215906

Solution

The solution to the problem is based on the solutions from the subproblems. a = {0.221215906, -0.191215906}

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