-25n^2+57n=-14

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Solution for -25n^2+57n=-14 equation:


Simplifying
-25n2 + 57n = -14

Reorder the terms:
57n + -25n2 = -14

Solving
57n + -25n2 = -14

Solving for variable 'n'.

Reorder the terms:
14 + 57n + -25n2 = -14 + 14

Combine like terms: -14 + 14 = 0
14 + 57n + -25n2 = 0

Begin completing the square.  Divide all terms by
-25 the coefficient of the squared term: 

Divide each side by '-25'.
-0.56 + -2.28n + n2 = 0

Move the constant term to the right:

Add '0.56' to each side of the equation.
-0.56 + -2.28n + 0.56 + n2 = 0 + 0.56

Reorder the terms:
-0.56 + 0.56 + -2.28n + n2 = 0 + 0.56

Combine like terms: -0.56 + 0.56 = 0.00
0.00 + -2.28n + n2 = 0 + 0.56
-2.28n + n2 = 0 + 0.56

Combine like terms: 0 + 0.56 = 0.56
-2.28n + n2 = 0.56

The n term is -2.28n.  Take half its coefficient (-1.14).
Square it (1.2996) and add it to both sides.

Add '1.2996' to each side of the equation.
-2.28n + 1.2996 + n2 = 0.56 + 1.2996

Reorder the terms:
1.2996 + -2.28n + n2 = 0.56 + 1.2996

Combine like terms: 0.56 + 1.2996 = 1.8596
1.2996 + -2.28n + n2 = 1.8596

Factor a perfect square on the left side:
(n + -1.14)(n + -1.14) = 1.8596

Calculate the square root of the right side: 1.363671515

Break this problem into two subproblems by setting 
(n + -1.14) equal to 1.363671515 and -1.363671515.

Subproblem 1

n + -1.14 = 1.363671515 Simplifying n + -1.14 = 1.363671515 Reorder the terms: -1.14 + n = 1.363671515 Solving -1.14 + n = 1.363671515 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '1.14' to each side of the equation. -1.14 + 1.14 + n = 1.363671515 + 1.14 Combine like terms: -1.14 + 1.14 = 0.00 0.00 + n = 1.363671515 + 1.14 n = 1.363671515 + 1.14 Combine like terms: 1.363671515 + 1.14 = 2.503671515 n = 2.503671515 Simplifying n = 2.503671515

Subproblem 2

n + -1.14 = -1.363671515 Simplifying n + -1.14 = -1.363671515 Reorder the terms: -1.14 + n = -1.363671515 Solving -1.14 + n = -1.363671515 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '1.14' to each side of the equation. -1.14 + 1.14 + n = -1.363671515 + 1.14 Combine like terms: -1.14 + 1.14 = 0.00 0.00 + n = -1.363671515 + 1.14 n = -1.363671515 + 1.14 Combine like terms: -1.363671515 + 1.14 = -0.223671515 n = -0.223671515 Simplifying n = -0.223671515

Solution

The solution to the problem is based on the solutions from the subproblems. n = {2.503671515, -0.223671515}

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