10n^2+12n-3=0

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Solution for 10n^2+12n-3=0 equation:


Simplifying
10n2 + 12n + -3 = 0

Reorder the terms:
-3 + 12n + 10n2 = 0

Solving
-3 + 12n + 10n2 = 0

Solving for variable 'n'.

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

Divide each side by '10'.
-0.3 + 1.2n + n2 = 0

Move the constant term to the right:

Add '0.3' to each side of the equation.
-0.3 + 1.2n + 0.3 + n2 = 0 + 0.3

Reorder the terms:
-0.3 + 0.3 + 1.2n + n2 = 0 + 0.3

Combine like terms: -0.3 + 0.3 = 0.0
0.0 + 1.2n + n2 = 0 + 0.3
1.2n + n2 = 0 + 0.3

Combine like terms: 0 + 0.3 = 0.3
1.2n + n2 = 0.3

The n term is 1.2n.  Take half its coefficient (0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
1.2n + 0.36 + n2 = 0.3 + 0.36

Reorder the terms:
0.36 + 1.2n + n2 = 0.3 + 0.36

Combine like terms: 0.3 + 0.36 = 0.66
0.36 + 1.2n + n2 = 0.66

Factor a perfect square on the left side:
(n + 0.6)(n + 0.6) = 0.66

Calculate the square root of the right side: 0.81240384

Break this problem into two subproblems by setting 
(n + 0.6) equal to 0.81240384 and -0.81240384.

Subproblem 1

n + 0.6 = 0.81240384 Simplifying n + 0.6 = 0.81240384 Reorder the terms: 0.6 + n = 0.81240384 Solving 0.6 + n = 0.81240384 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + n = 0.81240384 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + n = 0.81240384 + -0.6 n = 0.81240384 + -0.6 Combine like terms: 0.81240384 + -0.6 = 0.21240384 n = 0.21240384 Simplifying n = 0.21240384

Subproblem 2

n + 0.6 = -0.81240384 Simplifying n + 0.6 = -0.81240384 Reorder the terms: 0.6 + n = -0.81240384 Solving 0.6 + n = -0.81240384 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + n = -0.81240384 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + n = -0.81240384 + -0.6 n = -0.81240384 + -0.6 Combine like terms: -0.81240384 + -0.6 = -1.41240384 n = -1.41240384 Simplifying n = -1.41240384

Solution

The solution to the problem is based on the solutions from the subproblems. n = {0.21240384, -1.41240384}

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