Question

determine o vertice da função quadrática y=8x²-3x-5×4​

Answer 1

$a=8;\\b=-3;\\c=-20;\\\\\\x_{v}=\frac{-b}{2a}\\\\ y_{v}=\frac{-(b^{2}-4ac)}{4a}\\\\\\x_{v} = \frac{6}{16} = \frac{3}{8}=0,375\\\\y_{v}=\frac{-649}{32}=20,28125\\\\\\\\\\\\x=0,375;\\y=20,28125;$