u^2+4=6u

Simple and best practice solution for u^2+4=6u 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 u^2+4=6u equation:


Simplifying
u2 + 4 = 6u

Reorder the terms:
4 + u2 = 6u

Solving
4 + u2 = 6u

Solving for variable 'u'.

Reorder the terms:
4 + -6u + u2 = 6u + -6u

Combine like terms: 6u + -6u = 0
4 + -6u + u2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -6u + -4 + u2 = 0 + -4

Reorder the terms:
4 + -4 + -6u + u2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -6u + u2 = 0 + -4
-6u + u2 = 0 + -4

Combine like terms: 0 + -4 = -4
-6u + u2 = -4

The u term is -6u.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6u + 9 + u2 = -4 + 9

Reorder the terms:
9 + -6u + u2 = -4 + 9

Combine like terms: -4 + 9 = 5
9 + -6u + u2 = 5

Factor a perfect square on the left side:
(u + -3)(u + -3) = 5

Calculate the square root of the right side: 2.236067978

Break this problem into two subproblems by setting 
(u + -3) equal to 2.236067978 and -2.236067978.

Subproblem 1

u + -3 = 2.236067978 Simplifying u + -3 = 2.236067978 Reorder the terms: -3 + u = 2.236067978 Solving -3 + u = 2.236067978 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + u = 2.236067978 + 3 Combine like terms: -3 + 3 = 0 0 + u = 2.236067978 + 3 u = 2.236067978 + 3 Combine like terms: 2.236067978 + 3 = 5.236067978 u = 5.236067978 Simplifying u = 5.236067978

Subproblem 2

u + -3 = -2.236067978 Simplifying u + -3 = -2.236067978 Reorder the terms: -3 + u = -2.236067978 Solving -3 + u = -2.236067978 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + u = -2.236067978 + 3 Combine like terms: -3 + 3 = 0 0 + u = -2.236067978 + 3 u = -2.236067978 + 3 Combine like terms: -2.236067978 + 3 = 0.763932022 u = 0.763932022 Simplifying u = 0.763932022

Solution

The solution to the problem is based on the solutions from the subproblems. u = {5.236067978, 0.763932022}

See similar equations:

| -7w+24.8=2.4 | | -6s-7s+20=4 | | 2p^2-4p+11=0 | | 20+a^2=12 | | 5x+30+6=7x-4 | | u+5+0=20 | | 14+26=42+19 | | -8-12x=2+6x | | 3-n=-2 | | 6x+1=2(3x-4) | | 2-5k+2=4 | | 3x-5+35+1.4x=360 | | 0.04x+1.32=1.08 | | 5x+39+6=7x-4 | | 2a=7a-19 | | 46=-6t | | 40+5x=-7(4x-1) | | 4-3q=-10 | | 2x+12y=8y-4x | | 643=4160+n | | (2x)^-3/(5x)^-2 | | 7x+19=3x+135 | | 50k+80=40k+90 | | 7y-10=-8-4y | | (2x)^-3/(5x)^-3 | | n^2-14n+11=0 | | 225=r-650 | | 1-5(4-7m)=7m+37 | | 1/11y-4=-8 | | 3.1q-4.6-4.9q=-2.8q-4.7 | | .02-.003x+x=5.005 | | 7y+6-y=9+5y+4 |

Equations solver categories