Question

,......................

Answer 1

(4x-8)(0,75x+2)=-8

3X^2+8X-6X-16=-8

3X^2+2X-8=0

D=4+12*8=4+96=100

$x_{1}= frac{-2+10}{6}= frac{4}{3}; x_{2}= frac{-12}{6}=-2;$