x^2-22x+121=90

Simple and best practice solution for x^2-22x+121=90 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 x^2-22x+121=90 equation:


Simplifying
x2 + -22x + 121 = 90

Reorder the terms:
121 + -22x + x2 = 90

Solving
121 + -22x + x2 = 90

Solving for variable 'x'.

Reorder the terms:
121 + -90 + -22x + x2 = 90 + -90

Combine like terms: 121 + -90 = 31
31 + -22x + x2 = 90 + -90

Combine like terms: 90 + -90 = 0
31 + -22x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-31' to each side of the equation.
31 + -22x + -31 + x2 = 0 + -31

Reorder the terms:
31 + -31 + -22x + x2 = 0 + -31

Combine like terms: 31 + -31 = 0
0 + -22x + x2 = 0 + -31
-22x + x2 = 0 + -31

Combine like terms: 0 + -31 = -31
-22x + x2 = -31

The x term is -22x.  Take half its coefficient (-11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
-22x + 121 + x2 = -31 + 121

Reorder the terms:
121 + -22x + x2 = -31 + 121

Combine like terms: -31 + 121 = 90
121 + -22x + x2 = 90

Factor a perfect square on the left side:
(x + -11)(x + -11) = 90

Calculate the square root of the right side: 9.486832981

Break this problem into two subproblems by setting 
(x + -11) equal to 9.486832981 and -9.486832981.

Subproblem 1

x + -11 = 9.486832981 Simplifying x + -11 = 9.486832981 Reorder the terms: -11 + x = 9.486832981 Solving -11 + x = 9.486832981 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + x = 9.486832981 + 11 Combine like terms: -11 + 11 = 0 0 + x = 9.486832981 + 11 x = 9.486832981 + 11 Combine like terms: 9.486832981 + 11 = 20.486832981 x = 20.486832981 Simplifying x = 20.486832981

Subproblem 2

x + -11 = -9.486832981 Simplifying x + -11 = -9.486832981 Reorder the terms: -11 + x = -9.486832981 Solving -11 + x = -9.486832981 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + x = -9.486832981 + 11 Combine like terms: -11 + 11 = 0 0 + x = -9.486832981 + 11 x = -9.486832981 + 11 Combine like terms: -9.486832981 + 11 = 1.513167019 x = 1.513167019 Simplifying x = 1.513167019

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.486832981, 1.513167019}

See similar equations:

| 2e^4x=12e^9x | | 1/172(x-1330)^2+1980 | | x+0.6x= | | 9x-11=-x+29 | | 250=10*n | | 5(x-7)-2(3x-4)=3x | | x/12-14=-13 | | 35=30.5+n | | y-24=-3/5(x-6) | | 1/2Y+3=3Y-22 | | 6x-24=18 | | 4(12+z)-z=192 | | 5y(2)= | | 6+2y=7 | | y=2x^2-4x-1 | | R=.4x-.0001x^2 | | -8ln(-9x)=-8 | | 4p+9+(-7)+2= | | 6t^2-t-1=0 | | ln(-9x)=1 | | (12-7x)/(6-5x) | | -6/7x+1=-3/84x+19/91 | | 42x^2+264x-210= | | x^-3/4=27 | | 35000+25x=17615+550x | | -24+9=m-6 | | 30x^2-156x-378= | | 16x^2=6+4x | | xR=c[2+x(ab)] | | 21x^2-18x-48= | | 10x-8(x-4)=10 | | a/26=82 |

Equations solver categories