u^2+6u^2=4u+24

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Solution for u^2+6u^2=4u+24 equation:


Simplifying
u2 + 6u2 = 4u + 24

Combine like terms: u2 + 6u2 = 7u2
7u2 = 4u + 24

Reorder the terms:
7u2 = 24 + 4u

Solving
7u2 = 24 + 4u

Solving for variable 'u'.

Reorder the terms:
-24 + -4u + 7u2 = 24 + 4u + -24 + -4u

Reorder the terms:
-24 + -4u + 7u2 = 24 + -24 + 4u + -4u

Combine like terms: 24 + -24 = 0
-24 + -4u + 7u2 = 0 + 4u + -4u
-24 + -4u + 7u2 = 4u + -4u

Combine like terms: 4u + -4u = 0
-24 + -4u + 7u2 = 0

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

Divide each side by '7'.
-3.428571429 + -0.5714285714u + u2 = 0

Move the constant term to the right:

Add '3.428571429' to each side of the equation.
-3.428571429 + -0.5714285714u + 3.428571429 + u2 = 0 + 3.428571429

Reorder the terms:
-3.428571429 + 3.428571429 + -0.5714285714u + u2 = 0 + 3.428571429

Combine like terms: -3.428571429 + 3.428571429 = 0.000000000
0.000000000 + -0.5714285714u + u2 = 0 + 3.428571429
-0.5714285714u + u2 = 0 + 3.428571429

Combine like terms: 0 + 3.428571429 = 3.428571429
-0.5714285714u + u2 = 3.428571429

The u term is -0.5714285714u.  Take half its coefficient (-0.2857142857).
Square it (0.08163265305) and add it to both sides.

Add '0.08163265305' to each side of the equation.
-0.5714285714u + 0.08163265305 + u2 = 3.428571429 + 0.08163265305

Reorder the terms:
0.08163265305 + -0.5714285714u + u2 = 3.428571429 + 0.08163265305

Combine like terms: 3.428571429 + 0.08163265305 = 3.51020408205
0.08163265305 + -0.5714285714u + u2 = 3.51020408205

Factor a perfect square on the left side:
(u + -0.2857142857)(u + -0.2857142857) = 3.51020408205

Calculate the square root of the right side: 1.873553864

Break this problem into two subproblems by setting 
(u + -0.2857142857) equal to 1.873553864 and -1.873553864.

Subproblem 1

u + -0.2857142857 = 1.873553864 Simplifying u + -0.2857142857 = 1.873553864 Reorder the terms: -0.2857142857 + u = 1.873553864 Solving -0.2857142857 + u = 1.873553864 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '0.2857142857' to each side of the equation. -0.2857142857 + 0.2857142857 + u = 1.873553864 + 0.2857142857 Combine like terms: -0.2857142857 + 0.2857142857 = 0.0000000000 0.0000000000 + u = 1.873553864 + 0.2857142857 u = 1.873553864 + 0.2857142857 Combine like terms: 1.873553864 + 0.2857142857 = 2.1592681497 u = 2.1592681497 Simplifying u = 2.1592681497

Subproblem 2

u + -0.2857142857 = -1.873553864 Simplifying u + -0.2857142857 = -1.873553864 Reorder the terms: -0.2857142857 + u = -1.873553864 Solving -0.2857142857 + u = -1.873553864 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '0.2857142857' to each side of the equation. -0.2857142857 + 0.2857142857 + u = -1.873553864 + 0.2857142857 Combine like terms: -0.2857142857 + 0.2857142857 = 0.0000000000 0.0000000000 + u = -1.873553864 + 0.2857142857 u = -1.873553864 + 0.2857142857 Combine like terms: -1.873553864 + 0.2857142857 = -1.5878395783 u = -1.5878395783 Simplifying u = -1.5878395783

Solution

The solution to the problem is based on the solutions from the subproblems. u = {2.1592681497, -1.5878395783}

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