3x^2-6x+11=9

Simple and best practice solution for 3x^2-6x+11=9 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^2-6x+11=9 equation:


Simplifying
3x2 + -6x + 11 = 9

Reorder the terms:
11 + -6x + 3x2 = 9

Solving
11 + -6x + 3x2 = 9

Solving for variable 'x'.

Reorder the terms:
11 + -9 + -6x + 3x2 = 9 + -9

Combine like terms: 11 + -9 = 2
2 + -6x + 3x2 = 9 + -9

Combine like terms: 9 + -9 = 0
2 + -6x + 3x2 = 0

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

Divide each side by '3'.
0.6666666667 + -2x + x2 = 0

Move the constant term to the right:

Add '-0.6666666667' to each side of the equation.
0.6666666667 + -2x + -0.6666666667 + x2 = 0 + -0.6666666667

Reorder the terms:
0.6666666667 + -0.6666666667 + -2x + x2 = 0 + -0.6666666667

Combine like terms: 0.6666666667 + -0.6666666667 = 0.0000000000
0.0000000000 + -2x + x2 = 0 + -0.6666666667
-2x + x2 = 0 + -0.6666666667

Combine like terms: 0 + -0.6666666667 = -0.6666666667
-2x + x2 = -0.6666666667

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -0.6666666667 + 1

Reorder the terms:
1 + -2x + x2 = -0.6666666667 + 1

Combine like terms: -0.6666666667 + 1 = 0.3333333333
1 + -2x + x2 = 0.3333333333

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.3333333333

Calculate the square root of the right side: 0.577350269

Break this problem into two subproblems by setting 
(x + -1) equal to 0.577350269 and -0.577350269.

Subproblem 1

x + -1 = 0.577350269 Simplifying x + -1 = 0.577350269 Reorder the terms: -1 + x = 0.577350269 Solving -1 + x = 0.577350269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 0.577350269 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.577350269 + 1 x = 0.577350269 + 1 Combine like terms: 0.577350269 + 1 = 1.577350269 x = 1.577350269 Simplifying x = 1.577350269

Subproblem 2

x + -1 = -0.577350269 Simplifying x + -1 = -0.577350269 Reorder the terms: -1 + x = -0.577350269 Solving -1 + x = -0.577350269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -0.577350269 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.577350269 + 1 x = -0.577350269 + 1 Combine like terms: -0.577350269 + 1 = 0.422649731 x = 0.422649731 Simplifying x = 0.422649731

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.577350269, 0.422649731}

See similar equations:

| 4x-5=6(x+1)-2x | | 11+4=-18 | | -5x+5(2x-13)=-30 | | k^2+15k= | | 13g^2-11g-2= | | -5r(-10+4)= | | 5x+9=x+5 | | 24x+[-48]=4-x | | -42=-3x-4(-x+12) | | 2.4e-8+1=x | | 14=-6y+4(y+4) | | -2(m+8)= | | 3W^2+2W-1=0 | | 75.5.0=0 | | 8x+16=-4x+-24 | | -180=-4x+3(-5x+16) | | 24n^2-92n-72=0 | | 7x^2+42=0 | | 3-6a=5-3a | | 9=3(x-5)-7x | | 9-8b+6b= | | 4n(-9n+4)= | | 3a+4(a+12)=90 | | -14=5(1+4x)-2x | | 5x=9+2 | | x^4-1-x^2+24=0 | | -7x+3(-x+8)=-96 | | Y-5=-(5-4) | | 3a+(a+12)=90 | | 7-7y=-3(y-2) | | 12(x+13)=4(2x+9)+4x | | -9(9x+5)= |

Equations solver categories