3y^2+7y-4.25=0

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Solution for 3y^2+7y-4.25=0 equation:



3y^2+7y-4.25=0
a = 3; b = 7; c = -4.25;
Δ = b2-4ac
Δ = 72-4·3·(-4.25)
Δ = 100
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{100}=10$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-10}{2*3}=\frac{-17}{6} =-2+5/6 $
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+10}{2*3}=\frac{3}{6} =1/2 $

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