x^2-8x+6=-8

Simple and best practice solution for x^2-8x+6=-8 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+6=-8 equation:


Simplifying
x2 + -8x + 6 = -8

Reorder the terms:
6 + -8x + x2 = -8

Solving
6 + -8x + x2 = -8

Solving for variable 'x'.

Reorder the terms:
6 + 8 + -8x + x2 = -8 + 8

Combine like terms: 6 + 8 = 14
14 + -8x + x2 = -8 + 8

Combine like terms: -8 + 8 = 0
14 + -8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-14' to each side of the equation.
14 + -8x + -14 + x2 = 0 + -14

Reorder the terms:
14 + -14 + -8x + x2 = 0 + -14

Combine like terms: 14 + -14 = 0
0 + -8x + x2 = 0 + -14
-8x + x2 = 0 + -14

Combine like terms: 0 + -14 = -14
-8x + x2 = -14

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 = -14 + 16

Reorder the terms:
16 + -8x + x2 = -14 + 16

Combine like terms: -14 + 16 = 2
16 + -8x + x2 = 2

Factor a perfect square on the left side:
(x + -4)(x + -4) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(x + -4) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + -4 = 1.414213562 Simplifying x + -4 = 1.414213562 Reorder the terms: -4 + x = 1.414213562 Solving -4 + x = 1.414213562 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 = 1.414213562 + 4 Combine like terms: -4 + 4 = 0 0 + x = 1.414213562 + 4 x = 1.414213562 + 4 Combine like terms: 1.414213562 + 4 = 5.414213562 x = 5.414213562 Simplifying x = 5.414213562

Subproblem 2

x + -4 = -1.414213562 Simplifying x + -4 = -1.414213562 Reorder the terms: -4 + x = -1.414213562 Solving -4 + x = -1.414213562 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 = -1.414213562 + 4 Combine like terms: -4 + 4 = 0 0 + x = -1.414213562 + 4 x = -1.414213562 + 4 Combine like terms: -1.414213562 + 4 = 2.585786438 x = 2.585786438 Simplifying x = 2.585786438

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.414213562, 2.585786438}

See similar equations:

| (2x+5)=25 | | 3*80= | | 0.09xX=108.76 | | 3x-8x-35=0 | | -5(1+2x)=15 | | 16t^2+32t= | | 19=7+4x | | 3x^2+a*x-(a^2-1)=0 | | 2=w/3-4 | | 2.39x+4.82=9.37 | | x+15+x+17=18 | | X^2/49-64= | | 9(Y-3)=2y+15 | | x^2+15+50= | | 5(v-8)=v+12 | | 4x+12x+2=0 | | (d/c)^2 | | x-(2x+1)=8-3(3x+3) | | 10(9e+1)=100 | | x=3600+-0.8y | | 6(b+4)=42 | | (3x-1)(2x+1)+5x(3x-1)=0 | | x=3600-.8y | | 9p+2=5p-8 | | 17-8+x=8+4-3 | | 2/3y-5=-16 | | 184/400 | | 7k+12=2k+3 | | 5h+4=3h+18 | | L*l*.5l= | | 2(3x+5)=122 | | 9r+6r=8+4r |

Equations solver categories