12x^2-2x-8=0

Simple and best practice solution for 12x^2-2x-8=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 12x^2-2x-8=0 equation:


Simplifying
12x2 + -2x + -8 = 0

Reorder the terms:
-8 + -2x + 12x2 = 0

Solving
-8 + -2x + 12x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-4 + -1x + 6x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-4 + -1x + 6x2)' equal to zero and attempt to solve: Simplifying -4 + -1x + 6x2 = 0 Solving -4 + -1x + 6x2 = 0 Begin completing the square. Divide all terms by 6 the coefficient of the squared term: Divide each side by '6'. -0.6666666667 + -0.1666666667x + x2 = 0 Move the constant term to the right: Add '0.6666666667' to each side of the equation. -0.6666666667 + -0.1666666667x + 0.6666666667 + x2 = 0 + 0.6666666667 Reorder the terms: -0.6666666667 + 0.6666666667 + -0.1666666667x + x2 = 0 + 0.6666666667 Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000 0.0000000000 + -0.1666666667x + x2 = 0 + 0.6666666667 -0.1666666667x + x2 = 0 + 0.6666666667 Combine like terms: 0 + 0.6666666667 = 0.6666666667 -0.1666666667x + x2 = 0.6666666667 The x term is -0.1666666667x. Take half its coefficient (-0.08333333335). Square it (0.006944444447) and add it to both sides. Add '0.006944444447' to each side of the equation. -0.1666666667x + 0.006944444447 + x2 = 0.6666666667 + 0.006944444447 Reorder the terms: 0.006944444447 + -0.1666666667x + x2 = 0.6666666667 + 0.006944444447 Combine like terms: 0.6666666667 + 0.006944444447 = 0.673611111147 0.006944444447 + -0.1666666667x + x2 = 0.673611111147 Factor a perfect square on the left side: (x + -0.08333333335)(x + -0.08333333335) = 0.673611111147 Calculate the square root of the right side: 0.82073815 Break this problem into two subproblems by setting (x + -0.08333333335) equal to 0.82073815 and -0.82073815.

Subproblem 1

x + -0.08333333335 = 0.82073815 Simplifying x + -0.08333333335 = 0.82073815 Reorder the terms: -0.08333333335 + x = 0.82073815 Solving -0.08333333335 + x = 0.82073815 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.08333333335' to each side of the equation. -0.08333333335 + 0.08333333335 + x = 0.82073815 + 0.08333333335 Combine like terms: -0.08333333335 + 0.08333333335 = 0.00000000000 0.00000000000 + x = 0.82073815 + 0.08333333335 x = 0.82073815 + 0.08333333335 Combine like terms: 0.82073815 + 0.08333333335 = 0.90407148335 x = 0.90407148335 Simplifying x = 0.90407148335

Subproblem 2

x + -0.08333333335 = -0.82073815 Simplifying x + -0.08333333335 = -0.82073815 Reorder the terms: -0.08333333335 + x = -0.82073815 Solving -0.08333333335 + x = -0.82073815 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.08333333335' to each side of the equation. -0.08333333335 + 0.08333333335 + x = -0.82073815 + 0.08333333335 Combine like terms: -0.08333333335 + 0.08333333335 = 0.00000000000 0.00000000000 + x = -0.82073815 + 0.08333333335 x = -0.82073815 + 0.08333333335 Combine like terms: -0.82073815 + 0.08333333335 = -0.73740481665 x = -0.73740481665 Simplifying x = -0.73740481665

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.90407148335, -0.73740481665}

Solution

x = {0.90407148335, -0.73740481665}

See similar equations:

| w-3w=36 | | 0.71x-0.25x+10=0.64x | | 5(4l+2)=70 | | 2(3h-7)=4 | | 4x^2-9=8x | | 9y-4-6y=23 | | 3(2r+1)=15 | | 4(2y-3)=2x | | 4(g+3)=44 | | 5(p-2)=25 | | 5(p-2)=35 | | 2x-10y-19=0 | | 2(n+1)=12 | | 5x+5+x=3+2x-6 | | 8(8x+7)-4x=536 | | 8x-11=3x+4 | | -6(x+1)-10=28+4 | | 0.375x-0.3x+6=0.17x | | -8=-7(x-7)-(-8x-1) | | 2m(3m-5)=11m | | 10y+21=69 | | 3(1-2k)-4k=83 | | 12y=-60 | | 3x^2-4xy-20y^2=0 | | 13x^2+2x+2=0 | | -0.2(x-12)+0.5(x+2)=x+3 | | 7(y-2)=10 | | -5x-2=-22 | | 7(x+6)=98 | | 15x^2-22x+8=0 | | tan(0)= | | 9p+4=85 |

Equations solver categories