-3x^2-12x+1=0

Simple and best practice solution for -3x^2-12x+1=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 -3x^2-12x+1=0 equation:


Simplifying
-3x2 + -12x + 1 = 0

Reorder the terms:
1 + -12x + -3x2 = 0

Solving
1 + -12x + -3x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-0.3333333333 + 4x + x2 = 0

Move the constant term to the right:

Add '0.3333333333' to each side of the equation.
-0.3333333333 + 4x + 0.3333333333 + x2 = 0 + 0.3333333333

Reorder the terms:
-0.3333333333 + 0.3333333333 + 4x + x2 = 0 + 0.3333333333

Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000
0.0000000000 + 4x + x2 = 0 + 0.3333333333
4x + x2 = 0 + 0.3333333333

Combine like terms: 0 + 0.3333333333 = 0.3333333333
4x + x2 = 0.3333333333

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 0.3333333333 + 4

Reorder the terms:
4 + 4x + x2 = 0.3333333333 + 4

Combine like terms: 0.3333333333 + 4 = 4.3333333333
4 + 4x + x2 = 4.3333333333

Factor a perfect square on the left side:
(x + 2)(x + 2) = 4.3333333333

Calculate the square root of the right side: 2.081665999

Break this problem into two subproblems by setting 
(x + 2) equal to 2.081665999 and -2.081665999.

Subproblem 1

x + 2 = 2.081665999 Simplifying x + 2 = 2.081665999 Reorder the terms: 2 + x = 2.081665999 Solving 2 + x = 2.081665999 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 2.081665999 + -2 Combine like terms: 2 + -2 = 0 0 + x = 2.081665999 + -2 x = 2.081665999 + -2 Combine like terms: 2.081665999 + -2 = 0.081665999 x = 0.081665999 Simplifying x = 0.081665999

Subproblem 2

x + 2 = -2.081665999 Simplifying x + 2 = -2.081665999 Reorder the terms: 2 + x = -2.081665999 Solving 2 + x = -2.081665999 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -2.081665999 + -2 Combine like terms: 2 + -2 = 0 0 + x = -2.081665999 + -2 x = -2.081665999 + -2 Combine like terms: -2.081665999 + -2 = -4.081665999 x = -4.081665999 Simplifying x = -4.081665999

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.081665999, -4.081665999}

See similar equations:

| 28=w(2w-1) | | (x-2)(x+4)=14 | | x^2+x-36= | | 12c+5=c+31 | | 35x+-14=36x+-6 | | -18=x+20 | | 36x-14=36x-6 | | -22=11(2c-8) | | |-14|= | | (22-18)x(3+8)= | | x-24=6 | | 2(2)+3(4a)-4(3+3a)+3=0 | | 3y-24-6y+37= | | 4d^2-4d-80=0 | | x-8.8=-6.8 | | 2=2m+2+6m | | (q*q*q)-6(q*q)-21600=0 | | 12/3x5-16 | | 10-x/4x | | 6(2x+2)+15= | | -2/-1 | | 0=x^4-6x^3-x^2+20x | | 2.6-5.1=6.6 | | 3x/4-1/3(3x-6)=5/2(6-x/2) | | 6(2x^2-9x-18)=0 | | 8x/3-2x-6 | | 11x^3-x+9=x^3+45x^2+x | | 683+2x=53 | | 18-(2m+5)=4+2m-15 | | 6(4x+15)+13x-12= | | 31/5+x=6 | | a=-2(1.4c)+4c |

Equations solver categories