20a-15a^2=0

Simple and best practice solution for 20a-15a^2=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 20a-15a^2=0 equation: 



20a-15a^2=0

a = -15; b = 20; c = 0;
Δ = b2-4ac
Δ = 202-4·(-15)·0
Δ = 400
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{400}=20$


$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(20)-20}{2*-15}=\frac{-40}{-30}
=1+1/3
$


$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(20)+20}{2*-15}=\frac{0}{-30}
=0
$

See similar equations:

| (m+4)m=121 | | d/19+4=5 | | -2k-2=4 | | X1=0.1,x2=1.8 | | 8(2x-3)-5=11 | | -10-6v=-4 | | (6x+22°)=48 | | 8r-2r=1-34 | | 13r=9 | | -1u+10=8 | | 2158+1130.5=68.50x | | -1q-6=4 | | C=7n-15 | | 3-3v=-3 | | 2x/6=20 | | 13a=18 | | -7-6k=-1 | | 8t+15=3+-5 | | -3u-8=-5 | | 4+-1w=-1 | | 5.4^x*3*8.2^2x-1=4.8^3x | | 37x+175=360 | | 9+3p=3 | | 10b7÷=b | | 1+5c=-4 | | 12=10-(-x) | | D(t)=4000-3000 | | 9(y+4)=5(7-4) | | 6.55+3x=25.81 | | 4×+2(x+6)=36 | | 5x+100=400+x | | A+(66+a)=616 |

Equations solver categories