8a^2+79a-10=0

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Solution for 8a^2+79a-10=0 equation:



8a^2+79a-10=0
a = 8; b = 79; c = -10;
Δ = b2-4ac
Δ = 792-4·8·(-10)
Δ = 6561
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{6561}=81$
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(79)-81}{2*8}=\frac{-160}{16} =-10 $
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(79)+81}{2*8}=\frac{2}{16} =1/8 $

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