5n2=33n+56

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Solution for 5n2=33n+56 equation:



5n^2=33n+56
We move all terms to the left:
5n^2-(33n+56)=0
We get rid of parentheses
5n^2-33n-56=0
a = 5; b = -33; c = -56;
Δ = b2-4ac
Δ = -332-4·5·(-56)
Δ = 2209
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{2209}=47$
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-33)-47}{2*5}=\frac{-14}{10} =-1+2/5 $
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-33)+47}{2*5}=\frac{80}{10} =8 $

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