3X^2=-2+12X

Simple and best practice solution for 3X^2=-2+12X 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=-2+12X equation:


Simplifying
3X2 = -2 + 12X

Solving
3X2 = -2 + 12X

Solving for variable 'X'.

Reorder the terms:
2 + -12X + 3X2 = -2 + 12X + 2 + -12X

Reorder the terms:
2 + -12X + 3X2 = -2 + 2 + 12X + -12X

Combine like terms: -2 + 2 = 0
2 + -12X + 3X2 = 0 + 12X + -12X
2 + -12X + 3X2 = 12X + -12X

Combine like terms: 12X + -12X = 0
2 + -12X + 3X2 = 0

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

Divide each side by '3'.
0.6666666667 + -4X + X2 = 0

Move the constant term to the right:

Add '-0.6666666667' to each side of the equation.
0.6666666667 + -4X + -0.6666666667 + X2 = 0 + -0.6666666667

Reorder the terms:
0.6666666667 + -0.6666666667 + -4X + X2 = 0 + -0.6666666667

Combine like terms: 0.6666666667 + -0.6666666667 = 0.0000000000
0.0000000000 + -4X + X2 = 0 + -0.6666666667
-4X + X2 = 0 + -0.6666666667

Combine like terms: 0 + -0.6666666667 = -0.6666666667
-4X + X2 = -0.6666666667

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 = -0.6666666667 + 4

Reorder the terms:
4 + -4X + X2 = -0.6666666667 + 4

Combine like terms: -0.6666666667 + 4 = 3.3333333333
4 + -4X + X2 = 3.3333333333

Factor a perfect square on the left side:
(X + -2)(X + -2) = 3.3333333333

Calculate the square root of the right side: 1.825741858

Break this problem into two subproblems by setting 
(X + -2) equal to 1.825741858 and -1.825741858.

Subproblem 1

X + -2 = 1.825741858 Simplifying X + -2 = 1.825741858 Reorder the terms: -2 + X = 1.825741858 Solving -2 + X = 1.825741858 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 = 1.825741858 + 2 Combine like terms: -2 + 2 = 0 0 + X = 1.825741858 + 2 X = 1.825741858 + 2 Combine like terms: 1.825741858 + 2 = 3.825741858 X = 3.825741858 Simplifying X = 3.825741858

Subproblem 2

X + -2 = -1.825741858 Simplifying X + -2 = -1.825741858 Reorder the terms: -2 + X = -1.825741858 Solving -2 + X = -1.825741858 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 = -1.825741858 + 2 Combine like terms: -2 + 2 = 0 0 + X = -1.825741858 + 2 X = -1.825741858 + 2 Combine like terms: -1.825741858 + 2 = 0.174258142 X = 0.174258142 Simplifying X = 0.174258142

Solution

The solution to the problem is based on the solutions from the subproblems. X = {3.825741858, 0.174258142}

See similar equations:

| 3cos(2x)+4=5 | | 4.9t^2-2t+50=0 | | m^2+4m-23=0 | | 9(p+2)=p+20 | | 4.75+0.25x=7 | | 20-n=14 | | 2(x+15)+15=87 | | 8n-7=6(n-1) | | (1/4)*(-20) | | 3(c+4)=2c+17 | | ln(5x+9)=6 | | (6x^2+4x+2)+(8x^2+7x)= | | 6x-1/x=0 | | a^2-15+56=o | | -5(4+3y)=-25 | | 5+11x=1+x | | -4a+5-7a=21 | | 4x-6=-2r-18 | | 3x+2(x-16)=8 | | X-2=1/3x | | 33=8(3d-9) | | 8d-12-6d=2 | | 20=4s-6s | | -5h-9-7=-19 | | 9x-36=12x+9 | | 2.5+15+0.5(x-4)=1.2x+2(.9x-6) | | 3(8r+7)=-25 | | 5(3f-8g)+2g= | | 685+85=2 | | 35-4k=-9(8k-5) | | 4y+4-3(-4y-2)=4(y-2) | | -15=-6+9(b-3) |

Equations solver categories