u^2+16u-64=

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Solution for u^2+16u-64= equation:


Simplifying
u2 + 16u + -64 = 0

Reorder the terms:
-64 + 16u + u2 = 0

Solving
-64 + 16u + u2 = 0

Solving for variable 'u'.

Begin completing the square.

Move the constant term to the right:

Add '64' to each side of the equation.
-64 + 16u + 64 + u2 = 0 + 64

Reorder the terms:
-64 + 64 + 16u + u2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + 16u + u2 = 0 + 64
16u + u2 = 0 + 64

Combine like terms: 0 + 64 = 64
16u + u2 = 64

The u term is 16u.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16u + 64 + u2 = 64 + 64

Reorder the terms:
64 + 16u + u2 = 64 + 64

Combine like terms: 64 + 64 = 128
64 + 16u + u2 = 128

Factor a perfect square on the left side:
(u + 8)(u + 8) = 128

Calculate the square root of the right side: 11.313708499

Break this problem into two subproblems by setting 
(u + 8) equal to 11.313708499 and -11.313708499.

Subproblem 1

u + 8 = 11.313708499 Simplifying u + 8 = 11.313708499 Reorder the terms: 8 + u = 11.313708499 Solving 8 + u = 11.313708499 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + u = 11.313708499 + -8 Combine like terms: 8 + -8 = 0 0 + u = 11.313708499 + -8 u = 11.313708499 + -8 Combine like terms: 11.313708499 + -8 = 3.313708499 u = 3.313708499 Simplifying u = 3.313708499

Subproblem 2

u + 8 = -11.313708499 Simplifying u + 8 = -11.313708499 Reorder the terms: 8 + u = -11.313708499 Solving 8 + u = -11.313708499 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + u = -11.313708499 + -8 Combine like terms: 8 + -8 = 0 0 + u = -11.313708499 + -8 u = -11.313708499 + -8 Combine like terms: -11.313708499 + -8 = -19.313708499 u = -19.313708499 Simplifying u = -19.313708499

Solution

The solution to the problem is based on the solutions from the subproblems. u = {3.313708499, -19.313708499}

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