64-9y2=0

Solution for 64-9y2=0 equation:

64-9y^2=0

a = -9; b = 0; c = +64;
Δ = b2-4ac
Δ = 02-4·(-9)·64
Δ = 2304
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{2304}=48$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-48}{2*-9}=\frac{-48}{-18}
=2+2/3
$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+48}{2*-9}=\frac{48}{-18}
=-2+2/3
$