0=-16t^2+162

Solution for 0=-16t^2+162 equation:

0=-16t^2+162

We move all terms to the left:

0-(-16t^2+162)=0

We add all the numbers together, and all the variables

-(-16t^2+162)=0

We get rid of parentheses

16t^2-162=0

a = 16; b = 0; c = -162;
Δ = b2-4ac
Δ = 02-4·16·(-162)
Δ = 10368
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{10368}=\sqrt{5184*2}=\sqrt{5184}*\sqrt{2}=72\sqrt{2}$
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-72\sqrt{2}}{2*16}=\frac{0-72\sqrt{2}}{32}
=-\frac{72\sqrt{2}}{32}
=-\frac{9\sqrt{2}}{4}
$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+72\sqrt{2}}{2*16}=\frac{0+72\sqrt{2}}{32}
=\frac{72\sqrt{2}}{32}
=\frac{9\sqrt{2}}{4}
$