(u^2)-7u-22=0

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Solution for (u^2)-7u-22=0 equation:


Simplifying
(u2) + -7u + -22 = 0
u2 + -7u + -22 = 0

Reorder the terms:
-22 + -7u + u2 = 0

Solving
-22 + -7u + u2 = 0

Solving for variable 'u'.

Begin completing the square.

Move the constant term to the right:

Add '22' to each side of the equation.
-22 + -7u + 22 + u2 = 0 + 22

Reorder the terms:
-22 + 22 + -7u + u2 = 0 + 22

Combine like terms: -22 + 22 = 0
0 + -7u + u2 = 0 + 22
-7u + u2 = 0 + 22

Combine like terms: 0 + 22 = 22
-7u + u2 = 22

The u term is -7u.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7u + 12.25 + u2 = 22 + 12.25

Reorder the terms:
12.25 + -7u + u2 = 22 + 12.25

Combine like terms: 22 + 12.25 = 34.25
12.25 + -7u + u2 = 34.25

Factor a perfect square on the left side:
(u + -3.5)(u + -3.5) = 34.25

Calculate the square root of the right side: 5.852349955

Break this problem into two subproblems by setting 
(u + -3.5) equal to 5.852349955 and -5.852349955.

Subproblem 1

u + -3.5 = 5.852349955 Simplifying u + -3.5 = 5.852349955 Reorder the terms: -3.5 + u = 5.852349955 Solving -3.5 + u = 5.852349955 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + u = 5.852349955 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + u = 5.852349955 + 3.5 u = 5.852349955 + 3.5 Combine like terms: 5.852349955 + 3.5 = 9.352349955 u = 9.352349955 Simplifying u = 9.352349955

Subproblem 2

u + -3.5 = -5.852349955 Simplifying u + -3.5 = -5.852349955 Reorder the terms: -3.5 + u = -5.852349955 Solving -3.5 + u = -5.852349955 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + u = -5.852349955 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + u = -5.852349955 + 3.5 u = -5.852349955 + 3.5 Combine like terms: -5.852349955 + 3.5 = -2.352349955 u = -2.352349955 Simplifying u = -2.352349955

Solution

The solution to the problem is based on the solutions from the subproblems. u = {9.352349955, -2.352349955}

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