x^2-7x=6

Simple and best practice solution for x^2-7x=6 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^2-7x=6 equation:


Simplifying
x2 + -7x = 6

Reorder the terms:
-7x + x2 = 6

Solving
-7x + x2 = 6

Solving for variable 'x'.

Reorder the terms:
-6 + -7x + x2 = 6 + -6

Combine like terms: 6 + -6 = 0
-6 + -7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + -7x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + -7x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -7x + x2 = 0 + 6
-7x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
-7x + x2 = 6

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = 6 + 12.25

Reorder the terms:
12.25 + -7x + x2 = 6 + 12.25

Combine like terms: 6 + 12.25 = 18.25
12.25 + -7x + x2 = 18.25

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 18.25

Calculate the square root of the right side: 4.272001873

Break this problem into two subproblems by setting 
(x + -3.5) equal to 4.272001873 and -4.272001873.

Subproblem 1

x + -3.5 = 4.272001873 Simplifying x + -3.5 = 4.272001873 Reorder the terms: -3.5 + x = 4.272001873 Solving -3.5 + x = 4.272001873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = 4.272001873 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 4.272001873 + 3.5 x = 4.272001873 + 3.5 Combine like terms: 4.272001873 + 3.5 = 7.772001873 x = 7.772001873 Simplifying x = 7.772001873

Subproblem 2

x + -3.5 = -4.272001873 Simplifying x + -3.5 = -4.272001873 Reorder the terms: -3.5 + x = -4.272001873 Solving -3.5 + x = -4.272001873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = -4.272001873 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -4.272001873 + 3.5 x = -4.272001873 + 3.5 Combine like terms: -4.272001873 + 3.5 = -0.772001873 x = -0.772001873 Simplifying x = -0.772001873

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.772001873, -0.772001873}

See similar equations:

| 9x-7=1-7x | | 2x^2+2=34 | | (0,7x+1)/0,5=4 | | 3(x+3)=x+(x+3)+(2x-3) | | -t=t-24 | | -3a+3(8a+6)=6(6a+3) | | x(5x+5)=2x^2-14x+14 | | 7x-5+15=x+8 | | 9-9x=-123-30x | | 9-9x=-123-300x | | 56=-8n | | -8(2+7)=-6n+34 | | (m^2+3m+6)x=(3m+15)x+m^3-27 | | -1.2x^2-5.1x-7.4=0 | | 2(x-5)+2x=4(x+7)-38 | | -23=m-4 | | 7x+4-x=4x-5 | | (m^2+3m+6)x=(3m+15)x+m^3-6 | | d=3a+3b | | 7x-12=47 | | 16-(x-3)=2x-3 | | x-2(x+2)=2(x+9) | | (2v-5)(v+2)= | | 5(2x-3)-3(x+1)= | | N+16=10 | | 6-5v=14-7v+4v | | 9(5-x)= | | x=y^2+4y-1 | | 3x+12=4x-12 | | x=y^2+4x-1 | | 5(c-4)-2c=1 | | 8n-3=13-8n |

Equations solver categories