9r^2+3r+4=8r^2-r

Simple and best practice solution for 9r^2+3r+4=8r^2-r 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 9r^2+3r+4=8r^2-r equation: 



9r^2+3r+4=8r^2-r

We move all terms to the left:

9r^2+3r+4-(8r^2-r)=0

We get rid of parentheses

9r^2-8r^2+3r+r+4=0

We add all the numbers together, and all the variables

r^2+4r+4=0

a = 1; b = 4; c = +4;
Δ = b2-4ac
Δ = 42-4·1·4
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$r=\frac{-b}{2a}=\frac{-4}{2}=-2$

See similar equations:

| 12,5x+4,8=60 | | -28=5(W-5)-8w | | -(4=h)=3h} | | 2+64x^2=27 | | 11y+4y=75 | | X+20-12=6(x-12 | | x-8/6=-2 | | 14+1x=5x-10 | | $90n=3+$15 | | X-2/3+x-3/2=1/6 | | -9x+7=8 | | 2n-12=3n-18-n | | 19-9(4n+3)=6(7n+2)-28n | | 10r^2-9=-145 | | X+(x+12)=74 | | 2x+32=x*(2/9) | | x3=88 | | 6x+6=5x-10 | | 2n-12=3n-18 | | 3a^2+7=259 | | 5x+4x-13=26-4x | | 45e-5=-56 | | 7-(3n-8)=-9 | | 16a^2-5=-4 | | 4n-25=25 | | 3x-2=-x+17 | | 48-90/y*2=18 | | 4^3b=1÷64 | | 3+5n=5n+3 | | t²+7t=30 | | -6+3=2m | | 8/3x+1/3x=2/2/3+7/3 |

Equations solver categories