x=3x^2-12+1

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


Simplifying
x = 3x2 + -12 + 1

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

Combine like terms: -12 + 1 = -11
x = -11 + 3x2

Solving
x = -11 + 3x2

Solving for variable 'x'.

Reorder the terms:
11 + x + -3x2 = -11 + 3x2 + 11 + -3x2

Reorder the terms:
11 + x + -3x2 = -11 + 11 + 3x2 + -3x2

Combine like terms: -11 + 11 = 0
11 + x + -3x2 = 0 + 3x2 + -3x2
11 + x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
11 + x + -3x2 = 0

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

Divide each side by '-3'.
-3.666666667 + -0.3333333333x + x2 = 0

Move the constant term to the right:

Add '3.666666667' to each side of the equation.
-3.666666667 + -0.3333333333x + 3.666666667 + x2 = 0 + 3.666666667

Reorder the terms:
-3.666666667 + 3.666666667 + -0.3333333333x + x2 = 0 + 3.666666667

Combine like terms: -3.666666667 + 3.666666667 = 0.000000000
0.000000000 + -0.3333333333x + x2 = 0 + 3.666666667
-0.3333333333x + x2 = 0 + 3.666666667

Combine like terms: 0 + 3.666666667 = 3.666666667
-0.3333333333x + x2 = 3.666666667

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.3333333333x + 0.25 + x2 = 3.666666667 + 0.25

Reorder the terms:
0.25 + -0.3333333333x + x2 = 3.666666667 + 0.25

Combine like terms: 3.666666667 + 0.25 = 3.916666667
0.25 + -0.3333333333x + x2 = 3.916666667

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 3.916666667

Calculate the square root of the right side: 1.979057015

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.979057015 and -1.979057015.

Subproblem 1

x + 0.5 = 1.979057015 Simplifying x + 0.5 = 1.979057015 Reorder the terms: 0.5 + x = 1.979057015 Solving 0.5 + x = 1.979057015 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.979057015 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.979057015 + -0.5 x = 1.979057015 + -0.5 Combine like terms: 1.979057015 + -0.5 = 1.479057015 x = 1.479057015 Simplifying x = 1.479057015

Subproblem 2

x + 0.5 = -1.979057015 Simplifying x + 0.5 = -1.979057015 Reorder the terms: 0.5 + x = -1.979057015 Solving 0.5 + x = -1.979057015 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.979057015 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.979057015 + -0.5 x = -1.979057015 + -0.5 Combine like terms: -1.979057015 + -0.5 = -2.479057015 x = -2.479057015 Simplifying x = -2.479057015

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.479057015, -2.479057015}

See similar equations:

| n-9n+8=0 | | 1+y=700 | | 48.1/7.4 | | 1.50+5.00=14.50 | | 1+1+= | | sqrt(7x^2+15x)(-2x)=5+x | | 10x+12=75 | | -14x+-7+15x-12=0 | | 3(x-5)=9-3x+6+8+3x+7 | | 4.50+2.00=20.00 | | 4x+30=642x | | Ln(X+4)+ln(X-9)=ln^14 | | 6y+13=47 | | -19=-9-2x | | -3=3/2(x-1) | | f(x)=sin(2x^2) | | 8-3x+7(x-1)=4x+1 | | na=2+3a+8 | | 2c-3d+f=11 | | 4x^2+3=27 | | 9-7x+11x=18+x | | -6(5x+2)=-72 | | 5x/5y=25 | | 4(x+7)=108 | | A+5x+2=b+2x+38 | | -(4x-7)=15 | | 14(2+v)=56 | | 7/12*5/9 | | a[a+1][a+2]=1716 | | 1.4v-0.9=-3.51+2.3v | | 9+2x=1 | | 7-7x-6x=71 |

Equations solver categories