-21+-11x+2x2=0

Simple and best practice solution for -21+-11x+2x2=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 -21+-11x+2x2=0 equation:



-21+-11x+2x^2=0
We add all the numbers together, and all the variables
2x^2-11x=0
a = 2; b = -11; c = 0;
Δ = b2-4ac
Δ = -112-4·2·0
Δ = 121
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{121}=11$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-11)-11}{2*2}=\frac{0}{4} =0 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-11)+11}{2*2}=\frac{22}{4} =5+1/2 $

See similar equations:

| -128=-8(4r-8) | | n+5(n-1)=2 | | C=39.34+0.25x | | 6(2p-4)+5p=-92 | | 6x+2=3x-14 | | -2(6y-4)-y=-2(y-2) | | 2=w=-6 | | 5w+3=-4 | | x+.05x=205 | | 10x+19=3(3x+6) | | 24x-1+5=15 | | 2|4x-1|+5=15 | | 1/2t+8=12 | | 4x-31=14+x | | 3(4x+2)=6(x-2) | | 1000×x=1.1718 | | 7x+3/4=3/2x+7 | | -6x-25=19-4x | | X/3=12+x | | 6x2-5+1=0 | | Y-5y+6=0 | | X/2-x/6=18 | | 4.1×q=34.85 | | 12y+6=6(2y+9) | | -10+4x=5x+11 | | 450+0.05s=400+0.02s | | 2/x-5=0 | | 5t^2+27+34=0 | | .119=n-66 | | x/7-7=-5 | | (3n+60)^1/4+11=8 | | -55=-7v+1 |

Equations solver categories