3t^2+21t=0

Simple and best practice solution for 3t^2+21t=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 3t^2+21t=0 equation: 



3t^2+21t=0

a = 3; b = 21; c = 0;
Δ = b2-4ac
Δ = 212-4·3·0
Δ = 441
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{441}=21$


$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(21)-21}{2*3}=\frac{-42}{6}
=-7
$


$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(21)+21}{2*3}=\frac{0}{6}
=0
$

See similar equations:

| 20y-10=14y+10 | | 4x+6=-102 | | 10+7x=2x+50 | | 5(m-22)-6(4m-3)=60 | | 4(3x+8)=-28+36 | | (w-6)^2=2w^2-15w+18 | | 6^(x-1)=18 | | (3^x+2)-(3^x+1)=162 | | 4=2/5(3d-5) | | (125x+45)=180 | | (125x+45=180 | | 4x+4=-29+7x | | 10+6x=4x+26 | | |5x-4|=6;2 | | -3p+5+12p=9p-4 | | m2+-24m=0 | | a+500=a*1.05 | | 4b+8=52 | | 15=t/2+12 | | 7(6-2k)=5(-3k+1) | | 6x^2-24x=-24 | | 3=j/2+1 | | 4a/7=9 | | c/2-8=10 | | 3^x+2-3^x+1=162 | | v/27=8 | | 3/2x+7x=2x-5 | | 2x/6+45=1x/2+75 | | 15x−4=13x−6 | | 20×+30y=1280 | | 3-7y=‐18 | | 10x+4=+15x+50 |

Equations solver categories