12x^2-2x-x=2

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


Simplifying
12x2 + -2x + -1x = 2

Reorder the terms:
-2x + -1x + 12x2 = 2

Combine like terms: -2x + -1x = -3x
-3x + 12x2 = 2

Solving
-3x + 12x2 = 2

Solving for variable 'x'.

Reorder the terms:
-2 + -3x + 12x2 = 2 + -2

Combine like terms: 2 + -2 = 0
-2 + -3x + 12x2 = 0

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

Divide each side by '12'.
-0.1666666667 + -0.25x + x2 = 0

Move the constant term to the right:

Add '0.1666666667' to each side of the equation.
-0.1666666667 + -0.25x + 0.1666666667 + x2 = 0 + 0.1666666667

Reorder the terms:
-0.1666666667 + 0.1666666667 + -0.25x + x2 = 0 + 0.1666666667

Combine like terms: -0.1666666667 + 0.1666666667 = 0.0000000000
0.0000000000 + -0.25x + x2 = 0 + 0.1666666667
-0.25x + x2 = 0 + 0.1666666667

Combine like terms: 0 + 0.1666666667 = 0.1666666667
-0.25x + x2 = 0.1666666667

The x term is -0.25x.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25x + 0.015625 + x2 = 0.1666666667 + 0.015625

Reorder the terms:
0.015625 + -0.25x + x2 = 0.1666666667 + 0.015625

Combine like terms: 0.1666666667 + 0.015625 = 0.1822916667
0.015625 + -0.25x + x2 = 0.1822916667

Factor a perfect square on the left side:
(x + -0.125)(x + -0.125) = 0.1822916667

Calculate the square root of the right side: 0.426956282

Break this problem into two subproblems by setting 
(x + -0.125) equal to 0.426956282 and -0.426956282.

Subproblem 1

x + -0.125 = 0.426956282 Simplifying x + -0.125 = 0.426956282 Reorder the terms: -0.125 + x = 0.426956282 Solving -0.125 + x = 0.426956282 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + x = 0.426956282 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + x = 0.426956282 + 0.125 x = 0.426956282 + 0.125 Combine like terms: 0.426956282 + 0.125 = 0.551956282 x = 0.551956282 Simplifying x = 0.551956282

Subproblem 2

x + -0.125 = -0.426956282 Simplifying x + -0.125 = -0.426956282 Reorder the terms: -0.125 + x = -0.426956282 Solving -0.125 + x = -0.426956282 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + x = -0.426956282 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + x = -0.426956282 + 0.125 x = -0.426956282 + 0.125 Combine like terms: -0.426956282 + 0.125 = -0.301956282 x = -0.301956282 Simplifying x = -0.301956282

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.551956282, -0.301956282}

See similar equations:

| 2x+3x-3+7=3x+11 | | 12x-12=26 | | 16x-9(x+3)=5+7(x+5) | | h=-16t^2+22t-8 | | 39=14d-3 | | 208500+555x=25000 | | 9z-12=69 | | 7u=154 | | 4(x-2)=72 | | 3x+3x-3+10=4x+14 | | 6x^2-9x+3=0 | | q=3p+7pw | | 3(2+x)=-10+2x | | 13x-25=67 | | 18=4u-10 | | 3056890000-15000000x=3000000000x | | 2(x+3)-4=8+6x | | 84=3u | | 10=-.1x^2+4x | | 500+.35x=2.50x | | 3x+3x-3+7=4x+14 | | .3(x+9)=15 | | 0.40x-0.20(80+x)=-0.10(80) | | -27x=54 | | 0.08y+0.12(200-y)=0.46y | | 0.2t=2.4 | | 14x-8+24=36+6x | | 7x+6=-85 | | (-4)(8)= | | 9x+8=-190 | | 17=x-5 | | 1-5(m-2)+6=21 |

Equations solver categories