3x^2+11=8x

Simple and best practice solution for 3x^2+11=8x 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+11=8x equation:


Simplifying
3x2 + 11 = 8x

Reorder the terms:
11 + 3x2 = 8x

Solving
11 + 3x2 = 8x

Solving for variable 'x'.

Reorder the terms:
11 + -8x + 3x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
11 + -8x + 3x2 = 0

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

Divide each side by '3'.
3.666666667 + -2.666666667x + x2 = 0

Move the constant term to the right:

Add '-3.666666667' to each side of the equation.
3.666666667 + -2.666666667x + -3.666666667 + x2 = 0 + -3.666666667

Reorder the terms:
3.666666667 + -3.666666667 + -2.666666667x + x2 = 0 + -3.666666667

Combine like terms: 3.666666667 + -3.666666667 = 0.000000000
0.000000000 + -2.666666667x + x2 = 0 + -3.666666667
-2.666666667x + x2 = 0 + -3.666666667

Combine like terms: 0 + -3.666666667 = -3.666666667
-2.666666667x + x2 = -3.666666667

The x term is -2.666666667x.  Take half its coefficient (-1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
-2.666666667x + 1.777777780 + x2 = -3.666666667 + 1.777777780

Reorder the terms:
1.777777780 + -2.666666667x + x2 = -3.666666667 + 1.777777780

Combine like terms: -3.666666667 + 1.777777780 = -1.888888887
1.777777780 + -2.666666667x + x2 = -1.888888887

Factor a perfect square on the left side:
(x + -1.333333334)(x + -1.333333334) = -1.888888887

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 11/10d=2.2 | | 12n^2=-9 | | 2e-3=1 | | (4-9w)/(4w^2-49) | | 7c-5=9 | | 4x+25=19 | | 4-9w/4w^2-49 | | 11/10d=2/5 | | 48x+7.48=-5 | | 5a+1=9 | | (2x^3-3x^2-18x-8)/x-1) | | 15x-28=73 | | 18=15+5x | | 7p^2-7p-24=-5 | | 16t^2-23t-2= | | 3.3+9.8=19.04 | | 5/11g=2/3 | | n-5/n+8=2/7 | | X+68=x+128 | | 3m^2+6m-12m^2+9m= | | (2x^3+3x^2)+(5x^3+4x^2)= | | 21=3-9x | | 4v^2-12v-14=-11 | | z/1.3=.02 | | 7n+4=45 | | M^2+121=0 | | (0.25)x+2=64 | | L=34x+0.5 | | 5t^2-11t-3= | | 9+5x=-11+x | | s/4=6/7 | | 2(1-2x)=-3 |

Equations solver categories