5=u^2+11u

Simple and best practice solution for 5=u^2+11u equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 5=u^2+11u equation:


Simplifying
5 = u2 + 11u

Reorder the terms:
5 = 11u + u2

Solving
5 = 11u + u2

Solving for variable 'u'.

Reorder the terms:
5 + -11u + -1u2 = 11u + -11u + u2 + -1u2

Combine like terms: 11u + -11u = 0
5 + -11u + -1u2 = 0 + u2 + -1u2
5 + -11u + -1u2 = u2 + -1u2

Combine like terms: u2 + -1u2 = 0
5 + -11u + -1u2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-5 + 11u + u2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + 11u + 5 + u2 = 0 + 5

Reorder the terms:
-5 + 5 + 11u + u2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + 11u + u2 = 0 + 5
11u + u2 = 0 + 5

Combine like terms: 0 + 5 = 5
11u + u2 = 5

The u term is 11u.  Take half its coefficient (5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
11u + 30.25 + u2 = 5 + 30.25

Reorder the terms:
30.25 + 11u + u2 = 5 + 30.25

Combine like terms: 5 + 30.25 = 35.25
30.25 + 11u + u2 = 35.25

Factor a perfect square on the left side:
(u + 5.5)(u + 5.5) = 35.25

Calculate the square root of the right side: 5.937171044

Break this problem into two subproblems by setting 
(u + 5.5) equal to 5.937171044 and -5.937171044.

Subproblem 1

u + 5.5 = 5.937171044 Simplifying u + 5.5 = 5.937171044 Reorder the terms: 5.5 + u = 5.937171044 Solving 5.5 + u = 5.937171044 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + u = 5.937171044 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + u = 5.937171044 + -5.5 u = 5.937171044 + -5.5 Combine like terms: 5.937171044 + -5.5 = 0.437171044 u = 0.437171044 Simplifying u = 0.437171044

Subproblem 2

u + 5.5 = -5.937171044 Simplifying u + 5.5 = -5.937171044 Reorder the terms: 5.5 + u = -5.937171044 Solving 5.5 + u = -5.937171044 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + u = -5.937171044 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + u = -5.937171044 + -5.5 u = -5.937171044 + -5.5 Combine like terms: -5.937171044 + -5.5 = -11.437171044 u = -11.437171044 Simplifying u = -11.437171044

Solution

The solution to the problem is based on the solutions from the subproblems. u = {0.437171044, -11.437171044}

See similar equations:

| 2+3(2x-1)=29 | | -2+14=11y+8-10y | | 4m+16=5m+12 | | 4+4y+2y^2=244 | | 2/3+(9b-27)=36 | | 4a^2-8a= | | 14n+3-13n+11=15 | | 10y+3/y=54+10*3/y+y | | 9n-13-8n-15=6 | | 6m=3(7m+20) | | 456789+y+x+56789= | | t(7t+6)= | | B-28.8=4.2b | | K-22.8=4.8k | | 2x^2+14x+0=0 | | 2(3n-4)= | | Y+6/4+y-3=5y-4 | | a+c=215 | | 147w^2-192= | | 4(x-2)=9 | | 2z+9.57-7z=-5.15 | | 12y^2-13yz-4z^2= | | (x-2)1/2=(x-2) | | 3log(x+2)+3=3log(x-4)+3log(x+6) | | 1.4x+x=925 | | x(4x+2)=7 | | -9x+7= | | 8x-3(2x-5)= | | 25/90 | | -8+3x= | | (6x+6)/(x^2-9)-2/(x+3)=3/x-3 | | .66x+.75=.6(x-.375) |

Equations solver categories