y^2+81/4=-9y

Simple and best practice solution for y^2+81/4=-9y 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+81/4=-9y equation: 



y^2+81/4=-9y

We move all terms to the left:

y^2+81/4-(-9y)=0

We get rid of parentheses

y^2+9y+81/4=0

We multiply all the terms by the denominator


y^2*4+9y*4+81=0

Wy multiply elements

4y^2+36y+81=0

a = 4; b = 36; c = +81;
Δ = b2-4ac
Δ = 362-4·4·81
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$y=\frac{-b}{2a}=\frac{-36}{8}=-4+1/2$

See similar equations:

| 3x=2(4x+12) | | 63=x2−2x | | g/5+5g=7g-18 | | X+(x+1)=269 | | x=3x+6+7x-18 | | ?=3x+6+7x-18 | | 9x+5/2=12 | | q-4.8=-9 | | 2(6d+16)-14=8 | | 40.55=8g+3.83 | | 5x–10+3x=14–2x–10x+6 | | 90=13x+10x+21 | | 3/4x-4/8x=9 | | 90=15x-43+8x+18 | | x+3/5=x–6/2 | | 3x^2+56x+80=0 | | z(-2)=-11;z(7)=101 | | z(-2)=-26;z(7)=143 | | x=48–0.5(45-0.5x) | | z(-2)=-10;z(7)=143 | | 11x+7+3x+5=180 | | z(-2)=-2;z(7)=241 | | (x^2+4x^2+1)^1/2=0 | | x-2/9x=7 | | 4x^2-x+1=15/16+1 | | 11x+7=3x+5 | | 180=14x+70+20x+8 | | -2(t)=2t^2+7t-4 | | -3g-3+5+6g=11 | | 117=6x+44+(-10x)+65 | | (x+27)2=45 | | 6x-(x+2)=6x-x-2 |

Equations solver categories