u^2-11u+20=

Simple and best practice solution for u^2-11u+20= 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^2-11u+20= equation:


Simplifying
u2 + -11u + 20 = 0

Reorder the terms:
20 + -11u + u2 = 0

Solving
20 + -11u + u2 = 0

Solving for variable 'u'.

Begin completing the square.

Move the constant term to the right:

Add '-20' to each side of the equation.
20 + -11u + -20 + u2 = 0 + -20

Reorder the terms:
20 + -20 + -11u + u2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -11u + u2 = 0 + -20
-11u + u2 = 0 + -20

Combine like terms: 0 + -20 = -20
-11u + u2 = -20

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 = -20 + 30.25

Reorder the terms:
30.25 + -11u + u2 = -20 + 30.25

Combine like terms: -20 + 30.25 = 10.25
30.25 + -11u + u2 = 10.25

Factor a perfect square on the left side:
(u + -5.5)(u + -5.5) = 10.25

Calculate the square root of the right side: 3.201562119

Break this problem into two subproblems by setting 
(u + -5.5) equal to 3.201562119 and -3.201562119.

Subproblem 1

u + -5.5 = 3.201562119 Simplifying u + -5.5 = 3.201562119 Reorder the terms: -5.5 + u = 3.201562119 Solving -5.5 + u = 3.201562119 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 = 3.201562119 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + u = 3.201562119 + 5.5 u = 3.201562119 + 5.5 Combine like terms: 3.201562119 + 5.5 = 8.701562119 u = 8.701562119 Simplifying u = 8.701562119

Subproblem 2

u + -5.5 = -3.201562119 Simplifying u + -5.5 = -3.201562119 Reorder the terms: -5.5 + u = -3.201562119 Solving -5.5 + u = -3.201562119 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 = -3.201562119 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + u = -3.201562119 + 5.5 u = -3.201562119 + 5.5 Combine like terms: -3.201562119 + 5.5 = 2.298437881 u = 2.298437881 Simplifying u = 2.298437881

Solution

The solution to the problem is based on the solutions from the subproblems. u = {8.701562119, 2.298437881}

See similar equations:

| 6x-58=3x-13 | | 5+6k-8k=11 | | 5y-35=45 | | 9a+5=50 | | 4(x+6)=32x | | 0.02(y-5)+0.20y=0.12y-0.09(10) | | a+x=0 | | 10x^2-8=0 | | h(t)=-16t^2+96t+3 | | x+a=0 | | x^2-2.5x-6=0 | | X^2-2-8=0 | | 2.4+4=22 | | (6-y)(4y+1)=0 | | 2.4+22=4 | | 8m^2+48m=128 | | z^3+3z^2+6z+16=0 | | 9m+9=90 | | 3(31-12x)=38 | | 6m+10=34 | | f(x)=(x-5)(x-4) | | 3b-4.6=-26+9.7 | | 54-3x=9-8x | | 3-6t=3t-24 | | 0.14(y-8)+0.02y=0.20y-0.055(30) | | 3500(x+20)=217 | | 10r-4=2 | | 45g+30=195 | | 0.20(x)=11700 | | 19x-7=5+16x | | -18+41a=57 | | 4(w-1)-8=-6(-4w+1)-4w |

Equations solver categories