x^2-2x+2=9

Simple and best practice solution for x^2-2x+2=9 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^2-2x+2=9 equation:


Simplifying
x2 + -2x + 2 = 9

Reorder the terms:
2 + -2x + x2 = 9

Solving
2 + -2x + x2 = 9

Solving for variable 'x'.

Reorder the terms:
2 + -9 + -2x + x2 = 9 + -9

Combine like terms: 2 + -9 = -7
-7 + -2x + x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-7 + -2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -2x + 7 + x2 = 0 + 7

Reorder the terms:
-7 + 7 + -2x + x2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -2x + x2 = 0 + 7
-2x + x2 = 0 + 7

Combine like terms: 0 + 7 = 7
-2x + x2 = 7

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 7 + 1

Reorder the terms:
1 + -2x + x2 = 7 + 1

Combine like terms: 7 + 1 = 8
1 + -2x + x2 = 8

Factor a perfect square on the left side:
(x + -1)(x + -1) = 8

Calculate the square root of the right side: 2.828427125

Break this problem into two subproblems by setting 
(x + -1) equal to 2.828427125 and -2.828427125.

Subproblem 1

x + -1 = 2.828427125 Simplifying x + -1 = 2.828427125 Reorder the terms: -1 + x = 2.828427125 Solving -1 + x = 2.828427125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 2.828427125 + 1 Combine like terms: -1 + 1 = 0 0 + x = 2.828427125 + 1 x = 2.828427125 + 1 Combine like terms: 2.828427125 + 1 = 3.828427125 x = 3.828427125 Simplifying x = 3.828427125

Subproblem 2

x + -1 = -2.828427125 Simplifying x + -1 = -2.828427125 Reorder the terms: -1 + x = -2.828427125 Solving -1 + x = -2.828427125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -2.828427125 + 1 Combine like terms: -1 + 1 = 0 0 + x = -2.828427125 + 1 x = -2.828427125 + 1 Combine like terms: -2.828427125 + 1 = -1.828427125 x = -1.828427125 Simplifying x = -1.828427125

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.828427125, -1.828427125}

See similar equations:

| -1-5(9+x)+9x= | | 14-2p=-10+6p | | -12.5-0.5(6x-10)-8= | | 2(4x+5)+1=2+3(3x+4) | | 75g^3=147g | | 4x^2=400 | | 5(n+3)=3(1-2n) | | x^4-4x^3-5x^2+36x-36=(x-3) | | M^2+8m+15=0 | | 26h^2=48h | | x+4y-19=0 | | 4e^2=12 | | 10s+4(3s+12)-20= | | 2x+3=0 | | 4c^2+19c+21=0 | | 4e^9x=12 | | -5x-11y=-12 | | 2m^3-32m=0 | | -2x+7y=10 | | y=4x^3+15x^2-15x-44 | | 4x^3+15x^2-15x-44=0 | | y-1x+9=0 | | x+(x+11)=75 | | 3x-2(x+3)-5(x+3)= | | 8(p+5)+6(-2p-3)= | | 6t+5=3t+17 | | -2(-8y+3)=.75y-14 | | 5y=2y+22+y | | a+3=990 | | 4s+3s+s= | | -70=2h-3 | | 4b+2=18 |

Equations solver categories