5u^2+17u-6=0

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Solution for 5u^2+17u-6=0 equation:


Simplifying
5u2 + 17u + -6 = 0

Reorder the terms:
-6 + 17u + 5u2 = 0

Solving
-6 + 17u + 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'.
-1.2 + 3.4u + u2 = 0

Move the constant term to the right:

Add '1.2' to each side of the equation.
-1.2 + 3.4u + 1.2 + u2 = 0 + 1.2

Reorder the terms:
-1.2 + 1.2 + 3.4u + u2 = 0 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + 3.4u + u2 = 0 + 1.2
3.4u + u2 = 0 + 1.2

Combine like terms: 0 + 1.2 = 1.2
3.4u + u2 = 1.2

The u term is 3.4u.  Take half its coefficient (1.7).
Square it (2.89) and add it to both sides.

Add '2.89' to each side of the equation.
3.4u + 2.89 + u2 = 1.2 + 2.89

Reorder the terms:
2.89 + 3.4u + u2 = 1.2 + 2.89

Combine like terms: 1.2 + 2.89 = 4.09
2.89 + 3.4u + u2 = 4.09

Factor a perfect square on the left side:
(u + 1.7)(u + 1.7) = 4.09

Calculate the square root of the right side: 2.022374842

Break this problem into two subproblems by setting 
(u + 1.7) equal to 2.022374842 and -2.022374842.

Subproblem 1

u + 1.7 = 2.022374842 Simplifying u + 1.7 = 2.022374842 Reorder the terms: 1.7 + u = 2.022374842 Solving 1.7 + u = 2.022374842 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-1.7' to each side of the equation. 1.7 + -1.7 + u = 2.022374842 + -1.7 Combine like terms: 1.7 + -1.7 = 0.0 0.0 + u = 2.022374842 + -1.7 u = 2.022374842 + -1.7 Combine like terms: 2.022374842 + -1.7 = 0.322374842 u = 0.322374842 Simplifying u = 0.322374842

Subproblem 2

u + 1.7 = -2.022374842 Simplifying u + 1.7 = -2.022374842 Reorder the terms: 1.7 + u = -2.022374842 Solving 1.7 + u = -2.022374842 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-1.7' to each side of the equation. 1.7 + -1.7 + u = -2.022374842 + -1.7 Combine like terms: 1.7 + -1.7 = 0.0 0.0 + u = -2.022374842 + -1.7 u = -2.022374842 + -1.7 Combine like terms: -2.022374842 + -1.7 = -3.722374842 u = -3.722374842 Simplifying u = -3.722374842

Solution

The solution to the problem is based on the solutions from the subproblems. u = {0.322374842, -3.722374842}

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