5u^2+48u-27=0

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Solution for 5u^2+48u-27=0 equation:


Simplifying
5u2 + 48u + -27 = 0

Reorder the terms:
-27 + 48u + 5u2 = 0

Solving
-27 + 48u + 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'.
-5.4 + 9.6u + u2 = 0

Move the constant term to the right:

Add '5.4' to each side of the equation.
-5.4 + 9.6u + 5.4 + u2 = 0 + 5.4

Reorder the terms:
-5.4 + 5.4 + 9.6u + u2 = 0 + 5.4

Combine like terms: -5.4 + 5.4 = 0.0
0.0 + 9.6u + u2 = 0 + 5.4
9.6u + u2 = 0 + 5.4

Combine like terms: 0 + 5.4 = 5.4
9.6u + u2 = 5.4

The u term is 9.6u.  Take half its coefficient (4.8).
Square it (23.04) and add it to both sides.

Add '23.04' to each side of the equation.
9.6u + 23.04 + u2 = 5.4 + 23.04

Reorder the terms:
23.04 + 9.6u + u2 = 5.4 + 23.04

Combine like terms: 5.4 + 23.04 = 28.44
23.04 + 9.6u + u2 = 28.44

Factor a perfect square on the left side:
(u + 4.8)(u + 4.8) = 28.44

Calculate the square root of the right side: 5.33291665

Break this problem into two subproblems by setting 
(u + 4.8) equal to 5.33291665 and -5.33291665.

Subproblem 1

u + 4.8 = 5.33291665 Simplifying u + 4.8 = 5.33291665 Reorder the terms: 4.8 + u = 5.33291665 Solving 4.8 + u = 5.33291665 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-4.8' to each side of the equation. 4.8 + -4.8 + u = 5.33291665 + -4.8 Combine like terms: 4.8 + -4.8 = 0.0 0.0 + u = 5.33291665 + -4.8 u = 5.33291665 + -4.8 Combine like terms: 5.33291665 + -4.8 = 0.53291665 u = 0.53291665 Simplifying u = 0.53291665

Subproblem 2

u + 4.8 = -5.33291665 Simplifying u + 4.8 = -5.33291665 Reorder the terms: 4.8 + u = -5.33291665 Solving 4.8 + u = -5.33291665 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-4.8' to each side of the equation. 4.8 + -4.8 + u = -5.33291665 + -4.8 Combine like terms: 4.8 + -4.8 = 0.0 0.0 + u = -5.33291665 + -4.8 u = -5.33291665 + -4.8 Combine like terms: -5.33291665 + -4.8 = -10.13291665 u = -10.13291665 Simplifying u = -10.13291665

Solution

The solution to the problem is based on the solutions from the subproblems. u = {0.53291665, -10.13291665}

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