-8r^2-12r-13=-16-20r^2

Simple and best practice solution for -8r^2-12r-13=-16-20r^2 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 -8r^2-12r-13=-16-20r^2 equation: 



-8r^2-12r-13=-16-20r^2

We move all terms to the left:

-8r^2-12r-13-(-16-20r^2)=0

We get rid of parentheses

-8r^2+20r^2-12r+16-13=0

We add all the numbers together, and all the variables

12r^2-12r+3=0

a = 12; b = -12; c = +3;
Δ = b2-4ac
Δ = -122-4·12·3
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$r=\frac{-b}{2a}=\frac{12}{24}=1/2$

See similar equations:

| 6+3p=75 | | x+(x+2)+2(x+(x+2))=48 | | 2(3+2x)=x-6 | | 2x+15+8x=5(x-4) | | 2x+8+3x-4=180 | | -7c−4=-9c−9+c | | x^2+6x=x-10 | | 10=u/5.12+8 | | 4(x+3)=5(x+1) | | -9k+6=-8k | | 9u=10+10u | | 2(n+3)=n-3 | | 2p2-19p+24=0 | | r+540=-196 | | a+3a+a=4a-1 | | -4.3+5u=8.2 | | -12m^2-372=-12+14m-17m^2 | | 63=k*9 | | 63=k9 | | 3a+2=4a-1 | | 4x+149=x+361 | | 100x=1x | | 6x2=35 | | 12=6(y-4)+6y | | 9x^2=-6x+13 | | 3(x+4)-8x=32 | | X+150=2x+235 | | 9p^2-114=-11p | | 2(5x3-1)=8 | | 18x=23x-14 | | (x/8)+23-4=23 | | 9x+2=10x-1 |

Equations solver categories