11x^2-5x+81=0

Simple and best practice solution for 11x^2-5x+81=0 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 11x^2-5x+81=0 equation:


Simplifying
11x2 + -5x + 81 = 0

Reorder the terms:
81 + -5x + 11x2 = 0

Solving
81 + -5x + 11x2 = 0

Solving for variable 'x'.

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

Divide each side by '11'.
7.363636364 + -0.4545454545x + x2 = 0

Move the constant term to the right:

Add '-7.363636364' to each side of the equation.
7.363636364 + -0.4545454545x + -7.363636364 + x2 = 0 + -7.363636364

Reorder the terms:
7.363636364 + -7.363636364 + -0.4545454545x + x2 = 0 + -7.363636364

Combine like terms: 7.363636364 + -7.363636364 = 0.000000000
0.000000000 + -0.4545454545x + x2 = 0 + -7.363636364
-0.4545454545x + x2 = 0 + -7.363636364

Combine like terms: 0 + -7.363636364 = -7.363636364
-0.4545454545x + x2 = -7.363636364

The x term is -0.4545454545x.  Take half its coefficient (-0.2272727273).
Square it (0.05165289257) and add it to both sides.

Add '0.05165289257' to each side of the equation.
-0.4545454545x + 0.05165289257 + x2 = -7.363636364 + 0.05165289257

Reorder the terms:
0.05165289257 + -0.4545454545x + x2 = -7.363636364 + 0.05165289257

Combine like terms: -7.363636364 + 0.05165289257 = -7.31198347143
0.05165289257 + -0.4545454545x + x2 = -7.31198347143

Factor a perfect square on the left side:
(x + -0.2272727273)(x + -0.2272727273) = -7.31198347143

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| y=(2/3)0 | | x^2+10x+19=-18 | | y=(2/3)-1 | | 2(5t-6)=30-2t | | y=(2/3)-4 | | 2/3×-10=-12 | | 5x+3=9x-13 | | 10=2(p-6)-4 | | 2x/x-2 | | 1+2x+6x^2= | | 11+9=12x-4 | | 2(x+3)+5=19 | | 2x^2+3x+6=3x^2-6x+8x | | 135x^2-24.81x-6.607=0 | | 4x+142=14x-8 | | 12r^2-36r-588=0 | | 6x+3y+24=0 | | 1250*2.5=4.0(V) | | x^2+5x+12.25=6.25 | | x+x^2=11.25 | | 9x^2-12x-20=0 | | X/7=x/9 | | x+4x+7=108 | | (0.5t-1)(0.5t-1)=0 | | 3+m+2m+1+2m= | | 14x+17y=1200 | | 63-4x=13-9 | | -3(3y-8)+2(2y+5)= | | 6x^3-3x+1=0 | | 3x-4+2x+20-x=180 | | 5(n^2-3n-10)= | | (x+1)/3=1-(x/2) |

Equations solver categories