21000=x^2-x+1

Simple and best practice solution for 21000=x^2-x+1 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 21000=x^2-x+1 equation:


Simplifying
21000 = x2 + -1x + 1

Reorder the terms:
21000 = 1 + -1x + x2

Solving
21000 = 1 + -1x + x2

Solving for variable 'x'.

Combine like terms: 21000 + -1 = 20999
20999 + x + -1x2 = 1 + -1x + x2 + -1 + x + -1x2

Reorder the terms:
20999 + x + -1x2 = 1 + -1 + -1x + x + x2 + -1x2

Combine like terms: 1 + -1 = 0
20999 + x + -1x2 = 0 + -1x + x + x2 + -1x2
20999 + x + -1x2 = -1x + x + x2 + -1x2

Combine like terms: -1x + x = 0
20999 + x + -1x2 = 0 + x2 + -1x2
20999 + x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
20999 + x + -1x2 = 0

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

Divide each side by '-1'.
-20999 + -1x + x2 = 0

Move the constant term to the right:

Add '20999' to each side of the equation.
-20999 + -1x + 20999 + x2 = 0 + 20999

Reorder the terms:
-20999 + 20999 + -1x + x2 = 0 + 20999

Combine like terms: -20999 + 20999 = 0
0 + -1x + x2 = 0 + 20999
-1x + x2 = 0 + 20999

Combine like terms: 0 + 20999 = 20999
-1x + x2 = 20999

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 20999 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 20999 + 0.25

Combine like terms: 20999 + 0.25 = 20999.25
0.25 + -1x + x2 = 20999.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 20999.25

Calculate the square root of the right side: 144.911179693

Break this problem into two subproblems by setting 
(x + 0.5) equal to 144.911179693 and -144.911179693.

Subproblem 1

x + 0.5 = 144.911179693 Simplifying x + 0.5 = 144.911179693 Reorder the terms: 0.5 + x = 144.911179693 Solving 0.5 + x = 144.911179693 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 144.911179693 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 144.911179693 + -0.5 x = 144.911179693 + -0.5 Combine like terms: 144.911179693 + -0.5 = 144.411179693 x = 144.411179693 Simplifying x = 144.411179693

Subproblem 2

x + 0.5 = -144.911179693 Simplifying x + 0.5 = -144.911179693 Reorder the terms: 0.5 + x = -144.911179693 Solving 0.5 + x = -144.911179693 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -144.911179693 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -144.911179693 + -0.5 x = -144.911179693 + -0.5 Combine like terms: -144.911179693 + -0.5 = -145.411179693 x = -145.411179693 Simplifying x = -145.411179693

Solution

The solution to the problem is based on the solutions from the subproblems. x = {144.411179693, -145.411179693}

See similar equations:

| A+4=84-m=3 | | x-(-1)=-12 | | 22x+x-4=2x-4-2 | | 30x+11y=-69 | | N-3/n-5 | | -3(3)-(-3)=-6 | | 20+2x=100-x | | ax-3x=30 | | 5p^2-42p+49=0 | | 19x-32=64 | | 8x^3-21x^2+10x-2=0 | | 6+2a=3+20a | | 4x-3(2x-1)=5 | | 5x+11=106 | | (3x+3)(2x)=146 | | X^2(-1)+6= | | 3x^6*5x^7= | | (x-3.2)(x)(2.3)=180.4 | | .15*45= | | Y+1=-5(x+5) | | 25=20+15m | | 4-(2x-3)=3 | | f(x)=x^3-28-48 | | 5-(2x-3)=4(x-1) | | 80/ | | 5+2L=3+14L | | (A-10)*(A/10)-200 | | 7x-5=-5(x+2)-19 | | r^2+5-36=0 | | 6/5=x-2/40 | | -(-x+1)-7=2-(5-2x) | | 4x-15+5x+6+90=180 |

Equations solver categories