x^2+8x-160=0

Simple and best practice solution for x^2+8x-160=0 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-160=0 equation:


Simplifying
x2 + 8x + -160 = 0

Reorder the terms:
-160 + 8x + x2 = 0

Solving
-160 + 8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '160' to each side of the equation.
-160 + 8x + 160 + x2 = 0 + 160

Reorder the terms:
-160 + 160 + 8x + x2 = 0 + 160

Combine like terms: -160 + 160 = 0
0 + 8x + x2 = 0 + 160
8x + x2 = 0 + 160

Combine like terms: 0 + 160 = 160
8x + x2 = 160

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 = 160 + 16

Reorder the terms:
16 + 8x + x2 = 160 + 16

Combine like terms: 160 + 16 = 176
16 + 8x + x2 = 176

Factor a perfect square on the left side:
(x + 4)(x + 4) = 176

Calculate the square root of the right side: 13.266499161

Break this problem into two subproblems by setting 
(x + 4) equal to 13.266499161 and -13.266499161.

Subproblem 1

x + 4 = 13.266499161 Simplifying x + 4 = 13.266499161 Reorder the terms: 4 + x = 13.266499161 Solving 4 + x = 13.266499161 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 = 13.266499161 + -4 Combine like terms: 4 + -4 = 0 0 + x = 13.266499161 + -4 x = 13.266499161 + -4 Combine like terms: 13.266499161 + -4 = 9.266499161 x = 9.266499161 Simplifying x = 9.266499161

Subproblem 2

x + 4 = -13.266499161 Simplifying x + 4 = -13.266499161 Reorder the terms: 4 + x = -13.266499161 Solving 4 + x = -13.266499161 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 = -13.266499161 + -4 Combine like terms: 4 + -4 = 0 0 + x = -13.266499161 + -4 x = -13.266499161 + -4 Combine like terms: -13.266499161 + -4 = -17.266499161 x = -17.266499161 Simplifying x = -17.266499161

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.266499161, -17.266499161}

See similar equations:

| 21-u=-17 | | w^2+8w=0 | | 9+x=3-5x | | x+5y=20 | | 6x+13=12-5x | | 12-8x=84-29x | | 18n+29=-9(4-2n) | | -131-9x=7x+15 | | 8w=24 | | 12x-5x+280=14x | | 7+8x=13-3x | | 5(3x-4)=12+7x | | X+(3*-2)=-15 | | M-(-6)=11 | | 15(6c-1)-14=88c+15 | | 2z-8=-16 | | G+(-6)=7 | | 7x=12+4x | | 24x-7-16x+2=22x-5-14x+15 | | z+0=15 | | 4(x+7)=20 | | -6+s=11 | | 5x-3=-58 | | -3(1-3Y)-3Y=-15 | | 5y-5=2y+1 | | 2+9x=4+2x | | 4-3=3-(2-x) | | 20-3x=29 | | 2x+206=12x-14 | | 101-4x=23x+17 | | 5(2x+3)=55 | | 7(2x-1)=4x-5 |

Equations solver categories