0=60t-60t^2

Solution for 0=60t-60t^2 equation:

0=60t-60t^2

We move all terms to the left:

0-(60t-60t^2)=0

We add all the numbers together, and all the variables

-(60t-60t^2)=0

We get rid of parentheses

60t^2-60t=0

a = 60; b = -60; c = 0;
Δ = b2-4ac
Δ = -602-4·60·0
Δ = 3600
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{3600}=60$
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-60)-60}{2*60}=\frac{0}{120}
=0
$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-60)+60}{2*60}=\frac{120}{120}
=1
$