x^2-8x-2=-2+5

Simple and best practice solution for x^2-8x-2=-2+5 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=-2+5 equation:


Simplifying
x2 + -8x + -2 = -2 + 5

Reorder the terms:
-2 + -8x + x2 = -2 + 5

Combine like terms: -2 + 5 = 3
-2 + -8x + x2 = 3

Solving
-2 + -8x + x2 = 3

Solving for variable 'x'.

Reorder the terms:
-2 + -3 + -8x + x2 = 3 + -3

Combine like terms: -2 + -3 = -5
-5 + -8x + x2 = 3 + -3

Combine like terms: 3 + -3 = 0
-5 + -8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -8x + 5 + x2 = 0 + 5

Reorder the terms:
-5 + 5 + -8x + x2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -8x + x2 = 0 + 5
-8x + x2 = 0 + 5

Combine like terms: 0 + 5 = 5
-8x + x2 = 5

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 = 5 + 16

Reorder the terms:
16 + -8x + x2 = 5 + 16

Combine like terms: 5 + 16 = 21
16 + -8x + x2 = 21

Factor a perfect square on the left side:
(x + -4)(x + -4) = 21

Calculate the square root of the right side: 4.582575695

Break this problem into two subproblems by setting 
(x + -4) equal to 4.582575695 and -4.582575695.

Subproblem 1

x + -4 = 4.582575695 Simplifying x + -4 = 4.582575695 Reorder the terms: -4 + x = 4.582575695 Solving -4 + x = 4.582575695 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 = 4.582575695 + 4 Combine like terms: -4 + 4 = 0 0 + x = 4.582575695 + 4 x = 4.582575695 + 4 Combine like terms: 4.582575695 + 4 = 8.582575695 x = 8.582575695 Simplifying x = 8.582575695

Subproblem 2

x + -4 = -4.582575695 Simplifying x + -4 = -4.582575695 Reorder the terms: -4 + x = -4.582575695 Solving -4 + x = -4.582575695 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 = -4.582575695 + 4 Combine like terms: -4 + 4 = 0 0 + x = -4.582575695 + 4 x = -4.582575695 + 4 Combine like terms: -4.582575695 + 4 = -0.582575695 x = -0.582575695 Simplifying x = -0.582575695

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.582575695, -0.582575695}

See similar equations:

| x^2+13x+46=6 | | t=5t-4 | | 3(2x-1)+4=4x-2(3-x) | | 9(y^2)-9y+2=0 | | 3m^2+24m+36=3(m+6)(m+2) | | 90+19X= | | 15(x^2)-32x+16=0 | | 2-2s=222 | | 14(y^2)+29y+12=0 | | y-35=10(x-4) | | 14(x^2)+15x+4=0 | | 53-3x=15x+23 | | 12x^2+6-2=0 | | t^3-6t^2+11t-12=0 | | y^2-3y+15=4y+5 | | 12(y^2)-7y+1=0 | | (2x-3)(3-x)=0 | | 4(x^2)-8x+3=0 | | 4y+25=6y-45 | | 6x-1=5-x-3 | | 4x-17=-4x+23 | | 4(y^2)-17y+18=0 | | 2x-4=3x-1 | | 4(x^2)-11x+6=0 | | 3(p+4)-2(4p-1)=2 | | 8x+20-6=3x | | 3x-26=-5x | | (4x+2)+x=72 | | 4(x+4)-2(x-4)=4(x+6)+5x | | 2x+10=x+20+6 | | 15-3(x-1)=7 | | 67+x=235 |

Equations solver categories