6x^2=9-2x

Simple and best practice solution for 6x^2=9-2x 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 6x^2=9-2x equation:


Simplifying
6x2 = 9 + -2x

Solving
6x2 = 9 + -2x

Solving for variable 'x'.

Reorder the terms:
-9 + 2x + 6x2 = 9 + -2x + -9 + 2x

Reorder the terms:
-9 + 2x + 6x2 = 9 + -9 + -2x + 2x

Combine like terms: 9 + -9 = 0
-9 + 2x + 6x2 = 0 + -2x + 2x
-9 + 2x + 6x2 = -2x + 2x

Combine like terms: -2x + 2x = 0
-9 + 2x + 6x2 = 0

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

Divide each side by '6'.
-1.5 + 0.3333333333x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 0.3333333333x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 0.3333333333x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 0.3333333333x + x2 = 0 + 1.5
0.3333333333x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
0.3333333333x + x2 = 1.5

The x term is 0.3333333333x.  Take half its coefficient (0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
0.3333333333x + 0.02777777779 + x2 = 1.5 + 0.02777777779

Reorder the terms:
0.02777777779 + 0.3333333333x + x2 = 1.5 + 0.02777777779

Combine like terms: 1.5 + 0.02777777779 = 1.52777777779
0.02777777779 + 0.3333333333x + x2 = 1.52777777779

Factor a perfect square on the left side:
(x + 0.1666666667)(x + 0.1666666667) = 1.52777777779

Calculate the square root of the right side: 1.236033081

Break this problem into two subproblems by setting 
(x + 0.1666666667) equal to 1.236033081 and -1.236033081.

Subproblem 1

x + 0.1666666667 = 1.236033081 Simplifying x + 0.1666666667 = 1.236033081 Reorder the terms: 0.1666666667 + x = 1.236033081 Solving 0.1666666667 + x = 1.236033081 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + x = 1.236033081 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + x = 1.236033081 + -0.1666666667 x = 1.236033081 + -0.1666666667 Combine like terms: 1.236033081 + -0.1666666667 = 1.0693664143 x = 1.0693664143 Simplifying x = 1.0693664143

Subproblem 2

x + 0.1666666667 = -1.236033081 Simplifying x + 0.1666666667 = -1.236033081 Reorder the terms: 0.1666666667 + x = -1.236033081 Solving 0.1666666667 + x = -1.236033081 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + x = -1.236033081 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + x = -1.236033081 + -0.1666666667 x = -1.236033081 + -0.1666666667 Combine like terms: -1.236033081 + -0.1666666667 = -1.4026997477 x = -1.4026997477 Simplifying x = -1.4026997477

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.0693664143, -1.4026997477}

See similar equations:

| 8x+2=8(x+7) | | -5/6t=-45 | | 5250-552/24 | | 2(h-3)+4h+7+31=90 | | 5s+3=2s+9 | | 15a=6a-19 | | 81*23/27*4/9 | | 4t-9=23 | | 12y-6y=24 | | (x/6)-3=(x/6) | | n^5/n^3 | | 2x/7=9 | | 1/16y=-20 | | 8(4x+6)=6-(x+7) | | 6+2y=9 | | 5x^4-5x^3-x^2+x=0 | | 3+2x-2+6=18 | | 13/5-1/5n=0 | | 14+6x-2x=3x-x+24 | | 10a+9a= | | 2x+4y=66 | | 1/3-4/9n=2/9 | | 8-2x=7x+8 | | 9-n=13 | | 9x+2(90)=7x+7(40) | | 16w^2-196=0 | | -3/5c=42 | | 24=3(u+2)-6u | | 50x6/5 | | 15n-16=7 | | 6x+4=76 | | n/2+9=n+6 |

Equations solver categories