5u^2-34u+36=0

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Solution for 5u^2-34u+36=0 equation:


Simplifying
5u2 + -34u + 36 = 0

Reorder the terms:
36 + -34u + 5u2 = 0

Solving
36 + -34u + 5u2 = 0

Solving for variable 'u'.

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

Divide each side by '5'.
7.2 + -6.8u + u2 = 0

Move the constant term to the right:

Add '-7.2' to each side of the equation.
7.2 + -6.8u + -7.2 + u2 = 0 + -7.2

Reorder the terms:
7.2 + -7.2 + -6.8u + u2 = 0 + -7.2

Combine like terms: 7.2 + -7.2 = 0.0
0.0 + -6.8u + u2 = 0 + -7.2
-6.8u + u2 = 0 + -7.2

Combine like terms: 0 + -7.2 = -7.2
-6.8u + u2 = -7.2

The u term is -6.8u.  Take half its coefficient (-3.4).
Square it (11.56) and add it to both sides.

Add '11.56' to each side of the equation.
-6.8u + 11.56 + u2 = -7.2 + 11.56

Reorder the terms:
11.56 + -6.8u + u2 = -7.2 + 11.56

Combine like terms: -7.2 + 11.56 = 4.36
11.56 + -6.8u + u2 = 4.36

Factor a perfect square on the left side:
(u + -3.4)(u + -3.4) = 4.36

Calculate the square root of the right side: 2.088061302

Break this problem into two subproblems by setting 
(u + -3.4) equal to 2.088061302 and -2.088061302.

Subproblem 1

u + -3.4 = 2.088061302 Simplifying u + -3.4 = 2.088061302 Reorder the terms: -3.4 + u = 2.088061302 Solving -3.4 + u = 2.088061302 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3.4' to each side of the equation. -3.4 + 3.4 + u = 2.088061302 + 3.4 Combine like terms: -3.4 + 3.4 = 0.0 0.0 + u = 2.088061302 + 3.4 u = 2.088061302 + 3.4 Combine like terms: 2.088061302 + 3.4 = 5.488061302 u = 5.488061302 Simplifying u = 5.488061302

Subproblem 2

u + -3.4 = -2.088061302 Simplifying u + -3.4 = -2.088061302 Reorder the terms: -3.4 + u = -2.088061302 Solving -3.4 + u = -2.088061302 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3.4' to each side of the equation. -3.4 + 3.4 + u = -2.088061302 + 3.4 Combine like terms: -3.4 + 3.4 = 0.0 0.0 + u = -2.088061302 + 3.4 u = -2.088061302 + 3.4 Combine like terms: -2.088061302 + 3.4 = 1.311938698 u = 1.311938698 Simplifying u = 1.311938698

Solution

The solution to the problem is based on the solutions from the subproblems. u = {5.488061302, 1.311938698}

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