2n^2=63-5n

Solution for 2n^2=63-5n equation:

2n^2=63-5n

We move all terms to the left:

2n^2-(63-5n)=0

We add all the numbers together, and all the variables

2n^2-(-5n+63)=0

We get rid of parentheses

2n^2+5n-63=0

a = 2; b = 5; c = -63;
Δ = b2-4ac
Δ = 52-4·2·(-63)
Δ = 529
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{529}=23$
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(5)-23}{2*2}=\frac{-28}{4}
=-7
$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(5)+23}{2*2}=\frac{18}{4}
=4+1/2
$