25-49y2=0

Solution for 25-49y2=0 equation:

25-49y^2=0

a = -49; b = 0; c = +25;
Δ = b2-4ac
Δ = 02-4·(-49)·25
Δ = 4900
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{4900}=70$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-70}{2*-49}=\frac{-70}{-98}
=5/7
$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+70}{2*-49}=\frac{70}{-98}
=-5/7
$