15x2-16x+4=0

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Solution for 15x2-16x+4=0 equation:



15x^2-16x+4=0
a = 15; b = -16; c = +4;
Δ = b2-4ac
Δ = -162-4·15·4
Δ = 16
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{16}=4$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-16)-4}{2*15}=\frac{12}{30} =2/5 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-16)+4}{2*15}=\frac{20}{30} =2/3 $

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