15t2+5t=0

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Solution for 15t2+5t=0 equation: 



15t^2+5t=0

a = 15; b = 5; c = 0;
Δ = b2-4ac
Δ = 52-4·15·0
Δ = 25
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{25}=5$


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


$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(5)+5}{2*15}=\frac{0}{30}
=0
$

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