9x^2+18x=6x-1

Simple and best practice solution for 9x^2+18x=6x-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 9x^2+18x=6x-1 equation:


Simplifying
9x2 + 18x = 6x + -1

Reorder the terms:
18x + 9x2 = 6x + -1

Reorder the terms:
18x + 9x2 = -1 + 6x

Solving
18x + 9x2 = -1 + 6x

Solving for variable 'x'.

Reorder the terms:
1 + 18x + -6x + 9x2 = -1 + 6x + 1 + -6x

Combine like terms: 18x + -6x = 12x
1 + 12x + 9x2 = -1 + 6x + 1 + -6x

Reorder the terms:
1 + 12x + 9x2 = -1 + 1 + 6x + -6x

Combine like terms: -1 + 1 = 0
1 + 12x + 9x2 = 0 + 6x + -6x
1 + 12x + 9x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
1 + 12x + 9x2 = 0

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

Divide each side by '9'.
0.1111111111 + 1.333333333x + x2 = 0

Move the constant term to the right:

Add '-0.1111111111' to each side of the equation.
0.1111111111 + 1.333333333x + -0.1111111111 + x2 = 0 + -0.1111111111

Reorder the terms:
0.1111111111 + -0.1111111111 + 1.333333333x + x2 = 0 + -0.1111111111

Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000
0.0000000000 + 1.333333333x + x2 = 0 + -0.1111111111
1.333333333x + x2 = 0 + -0.1111111111

Combine like terms: 0 + -0.1111111111 = -0.1111111111
1.333333333x + x2 = -0.1111111111

The x term is 1.333333333x.  Take half its coefficient (0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
1.333333333x + 0.4444444442 + x2 = -0.1111111111 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333x + x2 = -0.1111111111 + 0.4444444442

Combine like terms: -0.1111111111 + 0.4444444442 = 0.3333333331
0.4444444442 + 1.333333333x + x2 = 0.3333333331

Factor a perfect square on the left side:
(x + 0.6666666665)(x + 0.6666666665) = 0.3333333331

Calculate the square root of the right side: 0.577350269

Break this problem into two subproblems by setting 
(x + 0.6666666665) equal to 0.577350269 and -0.577350269.

Subproblem 1

x + 0.6666666665 = 0.577350269 Simplifying x + 0.6666666665 = 0.577350269 Reorder the terms: 0.6666666665 + x = 0.577350269 Solving 0.6666666665 + x = 0.577350269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = 0.577350269 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = 0.577350269 + -0.6666666665 x = 0.577350269 + -0.6666666665 Combine like terms: 0.577350269 + -0.6666666665 = -0.0893163975 x = -0.0893163975 Simplifying x = -0.0893163975

Subproblem 2

x + 0.6666666665 = -0.577350269 Simplifying x + 0.6666666665 = -0.577350269 Reorder the terms: 0.6666666665 + x = -0.577350269 Solving 0.6666666665 + x = -0.577350269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = -0.577350269 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = -0.577350269 + -0.6666666665 x = -0.577350269 + -0.6666666665 Combine like terms: -0.577350269 + -0.6666666665 = -1.2440169355 x = -1.2440169355 Simplifying x = -1.2440169355

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.0893163975, -1.2440169355}

See similar equations:

| W(w+3)=104 | | 1/6*s-1/12*t=1 | | (X-4)(x-9)=24 | | 1/6s-1/12t=1 | | 7/8×3/4×1/3 | | 4x*x+6x=-1 | | 2x-12=3x+2 | | T(n)=5+6n | | s*6-37=113 | | 3x^2+11x=90 | | -11+10(p+10)=45(2p+11) | | 3y^2+14y+11=0 | | (x^3/xy^4)(y/x)^5 | | 15x+7y=5 | | x*x-8/9*x | | -3D+2=20 | | 2x=1y+10 | | f(x)=x^3-2x^2+20 | | 12/x^2 | | 5a+8b=-2 | | 1/t-2=t/8 | | M-1=3 | | 100+150x=2200 | | x*x-(8/9)x | | 2z+8=20 | | 15x^2y= | | 3v+16=5v | | X*x-8/9x | | 10-(2n-7)=3-3n | | -7-t=10-4t+10 | | 50=(7x)-(3x+250) | | x^2+3x-4=10 |

Equations solver categories