9x^2-6x=2

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


Simplifying
9x2 + -6x = 2

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

Solving
-6x + 9x2 = 2

Solving for variable 'x'.

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

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

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

Divide each side by '9'.
-0.2222222222 + -0.6666666667x + x2 = 0

Move the constant term to the right:

Add '0.2222222222' to each side of the equation.
-0.2222222222 + -0.6666666667x + 0.2222222222 + x2 = 0 + 0.2222222222

Reorder the terms:
-0.2222222222 + 0.2222222222 + -0.6666666667x + x2 = 0 + 0.2222222222

Combine like terms: -0.2222222222 + 0.2222222222 = 0.0000000000
0.0000000000 + -0.6666666667x + x2 = 0 + 0.2222222222
-0.6666666667x + x2 = 0 + 0.2222222222

Combine like terms: 0 + 0.2222222222 = 0.2222222222
-0.6666666667x + x2 = 0.2222222222

The x term is -0.6666666667x.  Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667x + 0.1111111112 + x2 = 0.2222222222 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667x + x2 = 0.2222222222 + 0.1111111112

Combine like terms: 0.2222222222 + 0.1111111112 = 0.3333333334
0.1111111112 + -0.6666666667x + x2 = 0.3333333334

Factor a perfect square on the left side:
(x + -0.3333333334)(x + -0.3333333334) = 0.3333333334

Calculate the square root of the right side: 0.577350269

Break this problem into two subproblems by setting 
(x + -0.3333333334) equal to 0.577350269 and -0.577350269.

Subproblem 1

x + -0.3333333334 = 0.577350269 Simplifying x + -0.3333333334 = 0.577350269 Reorder the terms: -0.3333333334 + x = 0.577350269 Solving -0.3333333334 + x = 0.577350269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = 0.577350269 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = 0.577350269 + 0.3333333334 x = 0.577350269 + 0.3333333334 Combine like terms: 0.577350269 + 0.3333333334 = 0.9106836024 x = 0.9106836024 Simplifying x = 0.9106836024

Subproblem 2

x + -0.3333333334 = -0.577350269 Simplifying x + -0.3333333334 = -0.577350269 Reorder the terms: -0.3333333334 + x = -0.577350269 Solving -0.3333333334 + x = -0.577350269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = -0.577350269 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = -0.577350269 + 0.3333333334 x = -0.577350269 + 0.3333333334 Combine like terms: -0.577350269 + 0.3333333334 = -0.2440169356 x = -0.2440169356 Simplifying x = -0.2440169356

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.9106836024, -0.2440169356}

See similar equations:

| -(6y+5)-(-5y-6)=-6 | | 5x^2-15x-30=0 | | h(3h-4)(h+1)=0 | | -4.9x^2+23.8x+3.5=0 | | (p-1)(p+6)= | | 4x^2+37x+81=x | | 18x^2-504=54x | | -36+2k=k-5k | | c^2+3c-18=0 | | c^2+c-42=0 | | 12n-2n*4-10n-2n*4+n= | | -36(13x)+29(20x)=78-78+-206+94 | | 16x^2+41x+25=0 | | -17m+8m=11-38 | | 7p=0 | | 3-6n+2n=5-98 | | 4y-2+y+42=8y+40-6y | | 27x^2-648=135x | | 24u+30+18u-24=26u-8 | | x^2-3x-10=y | | s^2+s-30=0 | | 24u+30+3u-4=26u-8 | | -5x-3=12 | | x^2-34x-5=0 | | x^2-34x+5=0 | | 7x(3x+5)= | | 8u-10+6u-8=78u-24 | | (7x+11)-(9x-7)= | | 56x^2-126x+35=0 | | (8x+3)-(3x+8)= | | 6x^3+24x=0 | | x^2-30x-31=0 |

Equations solver categories