x^2-6*x-(120)=0

Simple and best practice solution for x^2-6*x-(120)=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^2-6*x-(120)=0 equation:


Simplifying
x2 + -6x + -1(120) = 0

Multiply -1 * 120
x2 + -6x + -120 = 0

Reorder the terms:
-120 + -6x + x2 = 0

Solving
-120 + -6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '120' to each side of the equation.
-120 + -6x + 120 + x2 = 0 + 120

Reorder the terms:
-120 + 120 + -6x + x2 = 0 + 120

Combine like terms: -120 + 120 = 0
0 + -6x + x2 = 0 + 120
-6x + x2 = 0 + 120

Combine like terms: 0 + 120 = 120
-6x + x2 = 120

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = 120 + 9

Reorder the terms:
9 + -6x + x2 = 120 + 9

Combine like terms: 120 + 9 = 129
9 + -6x + x2 = 129

Factor a perfect square on the left side:
(x + -3)(x + -3) = 129

Calculate the square root of the right side: 11.357816692

Break this problem into two subproblems by setting 
(x + -3) equal to 11.357816692 and -11.357816692.

Subproblem 1

x + -3 = 11.357816692 Simplifying x + -3 = 11.357816692 Reorder the terms: -3 + x = 11.357816692 Solving -3 + x = 11.357816692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 11.357816692 + 3 Combine like terms: -3 + 3 = 0 0 + x = 11.357816692 + 3 x = 11.357816692 + 3 Combine like terms: 11.357816692 + 3 = 14.357816692 x = 14.357816692 Simplifying x = 14.357816692

Subproblem 2

x + -3 = -11.357816692 Simplifying x + -3 = -11.357816692 Reorder the terms: -3 + x = -11.357816692 Solving -3 + x = -11.357816692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -11.357816692 + 3 Combine like terms: -3 + 3 = 0 0 + x = -11.357816692 + 3 x = -11.357816692 + 3 Combine like terms: -11.357816692 + 3 = -8.357816692 x = -8.357816692 Simplifying x = -8.357816692

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.357816692, -8.357816692}

See similar equations:

| 2x-3y+11=0 | | (27441)^1/3 | | x-4y+z=35 | | 7/6x-2=1/3 | | M=49 | | M=409 | | (W-t)3= | | x-(x*0.16)=152.29 | | X+(.5x)=4550 | | x+4=5-1 | | y=lna | | 5x^2-4x^3-1=0 | | 3x-4=1o | | .10x+x=5500 | | 6[8-p]=4 | | .10(5000)+5000=y | | 6=7[p-2] | | o=16+4[m+6] | | 5[p+3]=16 | | 2(x-4)=4+8 | | t-6-2=16 | | a-6+2=11 | | -2y+5=-2 | | 5y-4=y+11 | | 3p+5=2 | | 2x+2y+2xy-1=0 | | 4(10x-7)=26 | | 7(3x-4)=47 | | 0.2(x+3)-5=8-2(m-4) | | 4y(y+3)=6 | | 3x+1-2=3-8+x | | 3x+10-(2x-5)=0 |

Equations solver categories