6x^2+11x=9

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


Simplifying
6x2 + 11x = 9

Reorder the terms:
11x + 6x2 = 9

Solving
11x + 6x2 = 9

Solving for variable 'x'.

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

Combine like terms: 9 + -9 = 0
-9 + 11x + 6x2 = 0

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

Divide each side by '6'.
-1.5 + 1.833333333x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 1.833333333x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 1.833333333x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 1.833333333x + x2 = 0 + 1.5
1.833333333x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
1.833333333x + x2 = 1.5

The x term is 1.833333333x.  Take half its coefficient (0.9166666665).
Square it (0.8402777775) and add it to both sides.

Add '0.8402777775' to each side of the equation.
1.833333333x + 0.8402777775 + x2 = 1.5 + 0.8402777775

Reorder the terms:
0.8402777775 + 1.833333333x + x2 = 1.5 + 0.8402777775

Combine like terms: 1.5 + 0.8402777775 = 2.3402777775
0.8402777775 + 1.833333333x + x2 = 2.3402777775

Factor a perfect square on the left side:
(x + 0.9166666665)(x + 0.9166666665) = 2.3402777775

Calculate the square root of the right side: 1.529796646

Break this problem into two subproblems by setting 
(x + 0.9166666665) equal to 1.529796646 and -1.529796646.

Subproblem 1

x + 0.9166666665 = 1.529796646 Simplifying x + 0.9166666665 = 1.529796646 Reorder the terms: 0.9166666665 + x = 1.529796646 Solving 0.9166666665 + x = 1.529796646 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9166666665' to each side of the equation. 0.9166666665 + -0.9166666665 + x = 1.529796646 + -0.9166666665 Combine like terms: 0.9166666665 + -0.9166666665 = 0.0000000000 0.0000000000 + x = 1.529796646 + -0.9166666665 x = 1.529796646 + -0.9166666665 Combine like terms: 1.529796646 + -0.9166666665 = 0.6131299795 x = 0.6131299795 Simplifying x = 0.6131299795

Subproblem 2

x + 0.9166666665 = -1.529796646 Simplifying x + 0.9166666665 = -1.529796646 Reorder the terms: 0.9166666665 + x = -1.529796646 Solving 0.9166666665 + x = -1.529796646 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9166666665' to each side of the equation. 0.9166666665 + -0.9166666665 + x = -1.529796646 + -0.9166666665 Combine like terms: 0.9166666665 + -0.9166666665 = 0.0000000000 0.0000000000 + x = -1.529796646 + -0.9166666665 x = -1.529796646 + -0.9166666665 Combine like terms: -1.529796646 + -0.9166666665 = -2.4464633125 x = -2.4464633125 Simplifying x = -2.4464633125

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6131299795, -2.4464633125}

See similar equations:

| 6(x-0.83)=-41 | | 2a-4=38 | | -k+2=-2k+9 | | 16l+24=184 | | y-6=2y-14 | | -6d+9=-5d | | x^3-4x^2-6x-9=0 | | 3y-10-6y=8 | | 10c-10c=0 | | -3-5(2x-1)=0 | | 8-9m+5=-9m+9 | | -12+y/6= | | 12x+5=13x-2 | | 10n+6=6+10n | | 5x-10+8x=29 | | 18s+24=258 | | 3(x+3)-4(2x-7)=0 | | -5+(y+7)=3y+29 | | 3(6x+2)=204 | | 5(2y-7)+8(7+6)=31 | | 2v+5=-11(8v+14)+9(1+10v) | | 0=9v-9v | | 3-8b=-8b+3 | | 18=4j-52-2 | | 2x-4-3x+4x=5 | | 1823-1819= | | (x-2)+(5x+2)=180 | | (2x+1)+(5x+5)+(90)=180 | | (3x+1)+(2x+4)+(90)=180 | | 4+6x=12x+6 | | 17=3t-45-11 | | 4g-3=-3-4g |

Equations solver categories