16n^2+4=19n

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Solution for 16n^2+4=19n equation:


Simplifying
16n2 + 4 = 19n

Reorder the terms:
4 + 16n2 = 19n

Solving
4 + 16n2 = 19n

Solving for variable 'n'.

Reorder the terms:
4 + -19n + 16n2 = 19n + -19n

Combine like terms: 19n + -19n = 0
4 + -19n + 16n2 = 0

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

Divide each side by '16'.
0.25 + -1.1875n + n2 = 0

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + -1.1875n + -0.25 + n2 = 0 + -0.25

Reorder the terms:
0.25 + -0.25 + -1.1875n + n2 = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + -1.1875n + n2 = 0 + -0.25
-1.1875n + n2 = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
-1.1875n + n2 = -0.25

The n term is -1.1875n.  Take half its coefficient (-0.59375).
Square it (0.3525390625) and add it to both sides.

Add '0.3525390625' to each side of the equation.
-1.1875n + 0.3525390625 + n2 = -0.25 + 0.3525390625

Reorder the terms:
0.3525390625 + -1.1875n + n2 = -0.25 + 0.3525390625

Combine like terms: -0.25 + 0.3525390625 = 0.1025390625
0.3525390625 + -1.1875n + n2 = 0.1025390625

Factor a perfect square on the left side:
(n + -0.59375)(n + -0.59375) = 0.1025390625

Calculate the square root of the right side: 0.320217211

Break this problem into two subproblems by setting 
(n + -0.59375) equal to 0.320217211 and -0.320217211.

Subproblem 1

n + -0.59375 = 0.320217211 Simplifying n + -0.59375 = 0.320217211 Reorder the terms: -0.59375 + n = 0.320217211 Solving -0.59375 + n = 0.320217211 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.59375' to each side of the equation. -0.59375 + 0.59375 + n = 0.320217211 + 0.59375 Combine like terms: -0.59375 + 0.59375 = 0.00000 0.00000 + n = 0.320217211 + 0.59375 n = 0.320217211 + 0.59375 Combine like terms: 0.320217211 + 0.59375 = 0.913967211 n = 0.913967211 Simplifying n = 0.913967211

Subproblem 2

n + -0.59375 = -0.320217211 Simplifying n + -0.59375 = -0.320217211 Reorder the terms: -0.59375 + n = -0.320217211 Solving -0.59375 + n = -0.320217211 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.59375' to each side of the equation. -0.59375 + 0.59375 + n = -0.320217211 + 0.59375 Combine like terms: -0.59375 + 0.59375 = 0.00000 0.00000 + n = -0.320217211 + 0.59375 n = -0.320217211 + 0.59375 Combine like terms: -0.320217211 + 0.59375 = 0.273532789 n = 0.273532789 Simplifying n = 0.273532789

Solution

The solution to the problem is based on the solutions from the subproblems. n = {0.913967211, 0.273532789}

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