y^2+3y-84=0

Simple and best practice solution for y^2+3y-84=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 y^2+3y-84=0 equation: 



y^2+3y-84=0

a = 1; b = 3; c = -84;
Δ = b2-4ac
Δ = 32-4·1·(-84)
Δ = 345
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(3)-\sqrt{345}}{2*1}=\frac{-3-\sqrt{345}}{2}
$


$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+\sqrt{345}}{2*1}=\frac{-3+\sqrt{345}}{2}
$

See similar equations:

| Y=3.9+0.25x | | X/2+x/3-3x/4=3 | | 4(5+5x)=220 | | 3/5x-11=34 | | 9(x-1)-8x=3(x+5) | | 2.5x/2=3.5-0.4x | | 0.51=x•0.56 | | 2(4+6x)=92 | | 2x-19=5+4x | | -6x-23=-x=12 | | 4^(3x+1)=124 | | 4x-32=58-5x | | (5x-2)2+6=0 | | 5u=7+5u | | 7-9r=0 | | 2t−3=13 | | 5x/6=-13/6 | | 1=16−3n | | 6=3g−6 | | 2p−7=5 | | k3− 3=1 | | 4q+1=17 | | 17−3r=2 | | s3+ 12=16 | | m4+ 14=18 | | 5=14−3b | | -17d+16−4d=-18−19d | | 6x+6=13x-1+1 | | 5n-3+2n=-17 | | 1.4+2/5e=3/15e=0.8 | | 6x+6=13x-1 | | 6(9+4x)=318 |

Equations solver categories