-2x(6x-11)=-7

Simple and best practice solution for -2x(6x-11)=-7 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 -2x(6x-11)=-7 equation:


Simplifying
-2x(6x + -11) = -7

Reorder the terms:
-2x(-11 + 6x) = -7
(-11 * -2x + 6x * -2x) = -7
(22x + -12x2) = -7

Solving
22x + -12x2 = -7

Solving for variable 'x'.

Reorder the terms:
7 + 22x + -12x2 = -7 + 7

Combine like terms: -7 + 7 = 0
7 + 22x + -12x2 = 0

Begin completing the square.  Divide all terms by
-12 the coefficient of the squared term: 

Divide each side by '-12'.
-0.5833333333 + -1.833333333x + x2 = 0

Move the constant term to the right:

Add '0.5833333333' to each side of the equation.
-0.5833333333 + -1.833333333x + 0.5833333333 + x2 = 0 + 0.5833333333

Reorder the terms:
-0.5833333333 + 0.5833333333 + -1.833333333x + x2 = 0 + 0.5833333333

Combine like terms: -0.5833333333 + 0.5833333333 = 0.0000000000
0.0000000000 + -1.833333333x + x2 = 0 + 0.5833333333
-1.833333333x + x2 = 0 + 0.5833333333

Combine like terms: 0 + 0.5833333333 = 0.5833333333
-1.833333333x + x2 = 0.5833333333

The x term is -1.833333333x.  Take half its coefficient (-0.9166666665).
Square it (0.8402777775) and add it to both sides.

Add '0.8402777775' to each side of the equation.
-1.833333333x + 0.8402777775 + x2 = 0.5833333333 + 0.8402777775

Reorder the terms:
0.8402777775 + -1.833333333x + x2 = 0.5833333333 + 0.8402777775

Combine like terms: 0.5833333333 + 0.8402777775 = 1.4236111108
0.8402777775 + -1.833333333x + x2 = 1.4236111108

Factor a perfect square on the left side:
(x + -0.9166666665)(x + -0.9166666665) = 1.4236111108

Calculate the square root of the right side: 1.193151755

Break this problem into two subproblems by setting 
(x + -0.9166666665) equal to 1.193151755 and -1.193151755.

Subproblem 1

x + -0.9166666665 = 1.193151755 Simplifying x + -0.9166666665 = 1.193151755 Reorder the terms: -0.9166666665 + x = 1.193151755 Solving -0.9166666665 + x = 1.193151755 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9166666665' to each side of the equation. -0.9166666665 + 0.9166666665 + x = 1.193151755 + 0.9166666665 Combine like terms: -0.9166666665 + 0.9166666665 = 0.0000000000 0.0000000000 + x = 1.193151755 + 0.9166666665 x = 1.193151755 + 0.9166666665 Combine like terms: 1.193151755 + 0.9166666665 = 2.1098184215 x = 2.1098184215 Simplifying x = 2.1098184215

Subproblem 2

x + -0.9166666665 = -1.193151755 Simplifying x + -0.9166666665 = -1.193151755 Reorder the terms: -0.9166666665 + x = -1.193151755 Solving -0.9166666665 + x = -1.193151755 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9166666665' to each side of the equation. -0.9166666665 + 0.9166666665 + x = -1.193151755 + 0.9166666665 Combine like terms: -0.9166666665 + 0.9166666665 = 0.0000000000 0.0000000000 + x = -1.193151755 + 0.9166666665 x = -1.193151755 + 0.9166666665 Combine like terms: -1.193151755 + 0.9166666665 = -0.2764850885 x = -0.2764850885 Simplifying x = -0.2764850885

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.1098184215, -0.2764850885}

See similar equations:

| 4x-7+x=18 | | 5x^2+2x+16=4x^2+6x | | y^6/Y^3 | | 5x/-8=-16/25 | | 2x^2-35x+108=0 | | -3x+4=2+4x | | 54-2x^3y^3=0 | | -7v+7v=-4-v | | 4r^2=-8r+5 | | 5y+25=40 | | 4m(m+9)= | | 25-2x=38 | | 2(n-6)-2n=-(7+n) | | m^3+11m^2+30m= | | 3u+3k+n=p | | 45-x= | | 33x-18y=12 | | (x+1)(x-2)=28 | | 6(y-2)=6y+2-2(-2y-2) | | 0.75x-5/7= | | 7z^2+7-50z=0 | | 10m+10=4(m+1) | | x+2x+6=11x | | 8[7-(5x-4)]+5x=0 | | 7z^2-50+7=0 | | x-3(2+4x)=6(x+1)+5x | | -8v+5(v+3)=6 | | 2(-2n+7)=-8(n+6)-2 | | -4n+14=-8n-2-2 | | 3w-10+w= | | 43x+5=35+10 | | 12=2+5b+2v |

Equations solver categories