3x^2=12x+4

Simple and best practice solution for 3x^2=12x+4 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+4 equation:


Simplifying
3x2 = 12x + 4

Reorder the terms:
3x2 = 4 + 12x

Solving
3x2 = 4 + 12x

Solving for variable 'x'.

Reorder the terms:
-4 + -12x + 3x2 = 4 + 12x + -4 + -12x

Reorder the terms:
-4 + -12x + 3x2 = 4 + -4 + 12x + -12x

Combine like terms: 4 + -4 = 0
-4 + -12x + 3x2 = 0 + 12x + -12x
-4 + -12x + 3x2 = 12x + -12x

Combine like terms: 12x + -12x = 0
-4 + -12x + 3x2 = 0

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

Divide each side by '3'.
-1.333333333 + -4x + x2 = 0

Move the constant term to the right:

Add '1.333333333' to each side of the equation.
-1.333333333 + -4x + 1.333333333 + x2 = 0 + 1.333333333

Reorder the terms:
-1.333333333 + 1.333333333 + -4x + x2 = 0 + 1.333333333

Combine like terms: -1.333333333 + 1.333333333 = 0.000000000
0.000000000 + -4x + x2 = 0 + 1.333333333
-4x + x2 = 0 + 1.333333333

Combine like terms: 0 + 1.333333333 = 1.333333333
-4x + x2 = 1.333333333

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 = 1.333333333 + 4

Reorder the terms:
4 + -4x + x2 = 1.333333333 + 4

Combine like terms: 1.333333333 + 4 = 5.333333333
4 + -4x + x2 = 5.333333333

Factor a perfect square on the left side:
(x + -2)(x + -2) = 5.333333333

Calculate the square root of the right side: 2.309401077

Break this problem into two subproblems by setting 
(x + -2) equal to 2.309401077 and -2.309401077.

Subproblem 1

x + -2 = 2.309401077 Simplifying x + -2 = 2.309401077 Reorder the terms: -2 + x = 2.309401077 Solving -2 + x = 2.309401077 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 = 2.309401077 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.309401077 + 2 x = 2.309401077 + 2 Combine like terms: 2.309401077 + 2 = 4.309401077 x = 4.309401077 Simplifying x = 4.309401077

Subproblem 2

x + -2 = -2.309401077 Simplifying x + -2 = -2.309401077 Reorder the terms: -2 + x = -2.309401077 Solving -2 + x = -2.309401077 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 = -2.309401077 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.309401077 + 2 x = -2.309401077 + 2 Combine like terms: -2.309401077 + 2 = -0.309401077 x = -0.309401077 Simplifying x = -0.309401077

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.309401077, -0.309401077}

See similar equations:

| -12(11)8= | | 10y-4=10y-4 | | [-1+x]=5 | | 42+8c=42 | | 14-3a=-2a-1 | | 4X+10X=14 | | -7x-6-2x=-69 | | 144+14m=270 | | x^3-6x+7=2 | | 2/5(5x+3)=-4x-6 | | 7x+(-5)=49 | | 59=x+4x+4 | | E+1=7(10e-6) | | x-5+6x=-61 | | -6m+4(m+8)=(-2m+2)+10 | | 4x+2(x-10)=220 | | 28x^2+16x-80=0 | | 7x+112y=168 | | 50=3x+25 | | 2(x-4)+3=3x-5 | | 7.2-3=2c-2 | | 69=6.9c | | 4x-27=-3x+1 | | 9x+8y=-3 | | 24/-6(-2)+7= | | p=0.004 | | x^2+5x-14=26 | | 23n-18=396 | | 2x+6x-5=3x+15 | | -4.7f=32.9 | | 6x-7y=34 | | 30x=240000(1/4) |

Equations solver categories