5u^2-32u-35=0

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Solution for 5u^2-32u-35=0 equation:


Simplifying
5u2 + -32u + -35 = 0

Reorder the terms:
-35 + -32u + 5u2 = 0

Solving
-35 + -32u + 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 + -6.4u + u2 = 0

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -6.4u + 7 + u2 = 0 + 7

Reorder the terms:
-7 + 7 + -6.4u + u2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -6.4u + u2 = 0 + 7
-6.4u + u2 = 0 + 7

Combine like terms: 0 + 7 = 7
-6.4u + u2 = 7

The u term is -6.4u.  Take half its coefficient (-3.2).
Square it (10.24) and add it to both sides.

Add '10.24' to each side of the equation.
-6.4u + 10.24 + u2 = 7 + 10.24

Reorder the terms:
10.24 + -6.4u + u2 = 7 + 10.24

Combine like terms: 7 + 10.24 = 17.24
10.24 + -6.4u + u2 = 17.24

Factor a perfect square on the left side:
(u + -3.2)(u + -3.2) = 17.24

Calculate the square root of the right side: 4.152107898

Break this problem into two subproblems by setting 
(u + -3.2) equal to 4.152107898 and -4.152107898.

Subproblem 1

u + -3.2 = 4.152107898 Simplifying u + -3.2 = 4.152107898 Reorder the terms: -3.2 + u = 4.152107898 Solving -3.2 + u = 4.152107898 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3.2' to each side of the equation. -3.2 + 3.2 + u = 4.152107898 + 3.2 Combine like terms: -3.2 + 3.2 = 0.0 0.0 + u = 4.152107898 + 3.2 u = 4.152107898 + 3.2 Combine like terms: 4.152107898 + 3.2 = 7.352107898 u = 7.352107898 Simplifying u = 7.352107898

Subproblem 2

u + -3.2 = -4.152107898 Simplifying u + -3.2 = -4.152107898 Reorder the terms: -3.2 + u = -4.152107898 Solving -3.2 + u = -4.152107898 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3.2' to each side of the equation. -3.2 + 3.2 + u = -4.152107898 + 3.2 Combine like terms: -3.2 + 3.2 = 0.0 0.0 + u = -4.152107898 + 3.2 u = -4.152107898 + 3.2 Combine like terms: -4.152107898 + 3.2 = -0.952107898 u = -0.952107898 Simplifying u = -0.952107898

Solution

The solution to the problem is based on the solutions from the subproblems. u = {7.352107898, -0.952107898}

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