10n^2+33n-7=0

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Solution for 10n^2+33n-7=0 equation:



10n^2+33n-7=0
a = 10; b = 33; c = -7;
Δ = b2-4ac
Δ = 332-4·10·(-7)
Δ = 1369
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1369}=37$
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(33)-37}{2*10}=\frac{-70}{20} =-3+1/2 $
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(33)+37}{2*10}=\frac{4}{20} =1/5 $

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