H(t)=-16t^2+136t

Solution for H(t)=-16t^2+136t equation:

(H)=-16H^2+136H

We move all terms to the left:

(H)-(-16H^2+136H)=0

We get rid of parentheses

16H^2-136H+H=0

We add all the numbers together, and all the variables

16H^2-135H=0

a = 16; b = -135; c = 0;
Δ = b2-4ac
Δ = -1352-4·16·0
Δ = 18225
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$H_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$H_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{18225}=135$
$H_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-135)-135}{2*16}=\frac{0}{32}
=0
$
$H_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-135)+135}{2*16}=\frac{270}{32}
=8+7/16
$