4y2-23y+30=0

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Solution for 4y2-23y+30=0 equation:



4y^2-23y+30=0
a = 4; b = -23; c = +30;
Δ = b2-4ac
Δ = -232-4·4·30
Δ = 49
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{49}=7$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-23)-7}{2*4}=\frac{16}{8} =2 $
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-23)+7}{2*4}=\frac{30}{8} =3+3/4 $

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