x^2-8x-2=22

Simple and best practice solution for x^2-8x-2=22 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^2-8x-2=22 equation:


Simplifying
x2 + -8x + -2 = 22

Reorder the terms:
-2 + -8x + x2 = 22

Solving
-2 + -8x + x2 = 22

Solving for variable 'x'.

Reorder the terms:
-2 + -22 + -8x + x2 = 22 + -22

Combine like terms: -2 + -22 = -24
-24 + -8x + x2 = 22 + -22

Combine like terms: 22 + -22 = 0
-24 + -8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '24' to each side of the equation.
-24 + -8x + 24 + x2 = 0 + 24

Reorder the terms:
-24 + 24 + -8x + x2 = 0 + 24

Combine like terms: -24 + 24 = 0
0 + -8x + x2 = 0 + 24
-8x + x2 = 0 + 24

Combine like terms: 0 + 24 = 24
-8x + x2 = 24

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 24 + 16

Reorder the terms:
16 + -8x + x2 = 24 + 16

Combine like terms: 24 + 16 = 40
16 + -8x + x2 = 40

Factor a perfect square on the left side:
(x + -4)(x + -4) = 40

Calculate the square root of the right side: 6.32455532

Break this problem into two subproblems by setting 
(x + -4) equal to 6.32455532 and -6.32455532.

Subproblem 1

x + -4 = 6.32455532 Simplifying x + -4 = 6.32455532 Reorder the terms: -4 + x = 6.32455532 Solving -4 + x = 6.32455532 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 6.32455532 + 4 Combine like terms: -4 + 4 = 0 0 + x = 6.32455532 + 4 x = 6.32455532 + 4 Combine like terms: 6.32455532 + 4 = 10.32455532 x = 10.32455532 Simplifying x = 10.32455532

Subproblem 2

x + -4 = -6.32455532 Simplifying x + -4 = -6.32455532 Reorder the terms: -4 + x = -6.32455532 Solving -4 + x = -6.32455532 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -6.32455532 + 4 Combine like terms: -4 + 4 = 0 0 + x = -6.32455532 + 4 x = -6.32455532 + 4 Combine like terms: -6.32455532 + 4 = -2.32455532 x = -2.32455532 Simplifying x = -2.32455532

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.32455532, -2.32455532}

See similar equations:

| 5+2w=22 | | x^2+12x+13=22 | | x^2-9x-14=0 | | 7t-2=0 | | 2x+2x+x+x=150 | | 3x^2-5x+7=0 | | 2x+11=y | | 3x^2-5x=7+0 | | x^2-2x+9=89 | | 4x+3.7y=-85 | | x^2-2x-5=42 | | .90(52)+x=c | | 2.5*0.2=8.1 | | x+.90x=52 | | 17x-13y-2= | | 4-7m=-3+4 | | 5r=8 | | 26x+63y=4 | | 210+.25x=355 | | 8(-8x-6)=-6x-22 | | (.4x+.2)(x+.6)= | | -3+4=-1 | | 4x+5(5x-5)=81 | | 2q+365=873 | | xxx-11x=26 | | 19x-2-7x=31x+6x-15 | | -8(-8x-6)=-6v-22 | | .05(60)-0.01(50)=2.5 | | 2(x-5)+3x=50 | | 6x-7=6(x+7) | | 11x+13=7x-7+9x | | (y-5)(y+5)= |

Equations solver categories