Comments

• x . (x+3) -40=0 x² + 3x - 40 =0 delta= (3)²-4.1.(-40) delta = 9+160 delta = 169 - ( 3)+/-V169/2.1 -3+13/2 = 5 -3-13/2 = -8

  in equação do 2º grau x (x+3) - 40 = 0? Comment by jodie-walsh_60b529694ce7b May 2021