Question

$1.5y^{2} + 4y+2.5=0$

Answer 1

$1.5y^{2} +4y+2.5=0 \ D=4^{2}-4*2.5*1.5=16-15=1 \ y_{1}= frac{-4- sqrt{1} }{2*1.5} = frac{-4-1 }{3} = frac{-5}{3} =-1 frac{2}{3} \ y_{1}= frac{-4+ sqrt{1} }{2*1.5} = frac{-4+1 }{3} = frac{-3}{3} =-1$