5z^2+15z=0

Simple and best practice solution for 5z^2+15z=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 5z^2+15z=0 equation: 



5z^2+15z=0

a = 5; b = 15; c = 0;
Δ = b2-4ac
Δ = 152-4·5·0
Δ = 225
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$z_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$z_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{225}=15$


$z_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(15)-15}{2*5}=\frac{-30}{10}
=-3
$


$z_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(15)+15}{2*5}=\frac{0}{10}
=0
$

See similar equations:

| 2x-4=2(x+7) | | -v+11=8 | | 2/11=4/5z | | 44x-28-3x=11+41x-39 | | 19x+17x+27x=90 | | 0.4(x+100)=0.46x-416 | | -6x-3(-7x+26)=57 | | -3(n-5)-(4n-1)=-5+(2n-1) | | |x+8|=x+3 | | 6-(2+36)/4=x | | 5/6=-1/2x | | -4+b=13 | | -9x^2+3200x-159600=0 | | 2/3=3/4x | | 30=8-x | | 5-1/6w=-7 | | 2/3=-3/4k | | 10y+100=180 | | (-x+2)/3=30 | | |x-6|=-6 | | 1.4x=7.2-x | | 1/2=1/3k | | 2x+7-6x+1=5x+6 | | 8-(3x-2)=290 | | -2(3x+4)=-3(4x+1) | | -5=-10x | | -8p-5(6-3p)=4(p-4)-8 | | 8.3+7.9=n | | 6x-5(x-8)=-17 | | 2(p-3)=18 | | 0.2910-5c0=5c-16 | | 5√x-2=25 |

Equations solver categories