5n^2=79

Solution for 5n^2=79 equation:

5n^2=79

We move all terms to the left:

5n^2-(79)=0

a = 5; b = 0; c = -79;
Δ = b2-4ac
Δ = 02-4·5·(-79)
Δ = 1580
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{1580}=\sqrt{4*395}=\sqrt{4}*\sqrt{395}=2\sqrt{395}$
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-2\sqrt{395}}{2*5}=\frac{0-2\sqrt{395}}{10}
=-\frac{2\sqrt{395}}{10}
=-\frac{\sqrt{395}}{5}
$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+2\sqrt{395}}{2*5}=\frac{0+2\sqrt{395}}{10}
=\frac{2\sqrt{395}}{10}
=\frac{\sqrt{395}}{5}
$