12n^2-5n=10

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Solution for 12n^2-5n=10 equation:


Simplifying
12n2 + -5n = 10

Reorder the terms:
-5n + 12n2 = 10

Solving
-5n + 12n2 = 10

Solving for variable 'n'.

Reorder the terms:
-10 + -5n + 12n2 = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + -5n + 12n2 = 0

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

Divide each side by '12'.
-0.8333333333 + -0.4166666667n + n2 = 0

Move the constant term to the right:

Add '0.8333333333' to each side of the equation.
-0.8333333333 + -0.4166666667n + 0.8333333333 + n2 = 0 + 0.8333333333

Reorder the terms:
-0.8333333333 + 0.8333333333 + -0.4166666667n + n2 = 0 + 0.8333333333

Combine like terms: -0.8333333333 + 0.8333333333 = 0.0000000000
0.0000000000 + -0.4166666667n + n2 = 0 + 0.8333333333
-0.4166666667n + n2 = 0 + 0.8333333333

Combine like terms: 0 + 0.8333333333 = 0.8333333333
-0.4166666667n + n2 = 0.8333333333

The n term is -0.4166666667n.  Take half its coefficient (-0.2083333334).
Square it (0.04340277781) and add it to both sides.

Add '0.04340277781' to each side of the equation.
-0.4166666667n + 0.04340277781 + n2 = 0.8333333333 + 0.04340277781

Reorder the terms:
0.04340277781 + -0.4166666667n + n2 = 0.8333333333 + 0.04340277781

Combine like terms: 0.8333333333 + 0.04340277781 = 0.87673611111
0.04340277781 + -0.4166666667n + n2 = 0.87673611111

Factor a perfect square on the left side:
(n + -0.2083333334)(n + -0.2083333334) = 0.87673611111

Calculate the square root of the right side: 0.936341877

Break this problem into two subproblems by setting 
(n + -0.2083333334) equal to 0.936341877 and -0.936341877.

Subproblem 1

n + -0.2083333334 = 0.936341877 Simplifying n + -0.2083333334 = 0.936341877 Reorder the terms: -0.2083333334 + n = 0.936341877 Solving -0.2083333334 + n = 0.936341877 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.2083333334' to each side of the equation. -0.2083333334 + 0.2083333334 + n = 0.936341877 + 0.2083333334 Combine like terms: -0.2083333334 + 0.2083333334 = 0.0000000000 0.0000000000 + n = 0.936341877 + 0.2083333334 n = 0.936341877 + 0.2083333334 Combine like terms: 0.936341877 + 0.2083333334 = 1.1446752104 n = 1.1446752104 Simplifying n = 1.1446752104

Subproblem 2

n + -0.2083333334 = -0.936341877 Simplifying n + -0.2083333334 = -0.936341877 Reorder the terms: -0.2083333334 + n = -0.936341877 Solving -0.2083333334 + n = -0.936341877 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.2083333334' to each side of the equation. -0.2083333334 + 0.2083333334 + n = -0.936341877 + 0.2083333334 Combine like terms: -0.2083333334 + 0.2083333334 = 0.0000000000 0.0000000000 + n = -0.936341877 + 0.2083333334 n = -0.936341877 + 0.2083333334 Combine like terms: -0.936341877 + 0.2083333334 = -0.7280085436 n = -0.7280085436 Simplifying n = -0.7280085436

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.1446752104, -0.7280085436}

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