4u^2-29u-16=0

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Solution for 4u^2-29u-16=0 equation:


Simplifying
4u2 + -29u + -16 = 0

Reorder the terms:
-16 + -29u + 4u2 = 0

Solving
-16 + -29u + 4u2 = 0

Solving for variable 'u'.

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

Divide each side by '4'.
-4 + -7.25u + u2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + -7.25u + 4 + u2 = 0 + 4

Reorder the terms:
-4 + 4 + -7.25u + u2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -7.25u + u2 = 0 + 4
-7.25u + u2 = 0 + 4

Combine like terms: 0 + 4 = 4
-7.25u + u2 = 4

The u term is -7.25u.  Take half its coefficient (-3.625).
Square it (13.140625) and add it to both sides.

Add '13.140625' to each side of the equation.
-7.25u + 13.140625 + u2 = 4 + 13.140625

Reorder the terms:
13.140625 + -7.25u + u2 = 4 + 13.140625

Combine like terms: 4 + 13.140625 = 17.140625
13.140625 + -7.25u + u2 = 17.140625

Factor a perfect square on the left side:
(u + -3.625)(u + -3.625) = 17.140625

Calculate the square root of the right side: 4.14012379

Break this problem into two subproblems by setting 
(u + -3.625) equal to 4.14012379 and -4.14012379.

Subproblem 1

u + -3.625 = 4.14012379 Simplifying u + -3.625 = 4.14012379 Reorder the terms: -3.625 + u = 4.14012379 Solving -3.625 + u = 4.14012379 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3.625' to each side of the equation. -3.625 + 3.625 + u = 4.14012379 + 3.625 Combine like terms: -3.625 + 3.625 = 0.000 0.000 + u = 4.14012379 + 3.625 u = 4.14012379 + 3.625 Combine like terms: 4.14012379 + 3.625 = 7.76512379 u = 7.76512379 Simplifying u = 7.76512379

Subproblem 2

u + -3.625 = -4.14012379 Simplifying u + -3.625 = -4.14012379 Reorder the terms: -3.625 + u = -4.14012379 Solving -3.625 + u = -4.14012379 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3.625' to each side of the equation. -3.625 + 3.625 + u = -4.14012379 + 3.625 Combine like terms: -3.625 + 3.625 = 0.000 0.000 + u = -4.14012379 + 3.625 u = -4.14012379 + 3.625 Combine like terms: -4.14012379 + 3.625 = -0.51512379 u = -0.51512379 Simplifying u = -0.51512379

Solution

The solution to the problem is based on the solutions from the subproblems. u = {7.76512379, -0.51512379}

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