Question

qual e a resposta ihgshsgushssyshshahsvshsbshsvssusbshsjssbsbsnsbsbsbsbsbsbs sbs sbsnsbnssnsbsnsbsns

Answer 1

 x² + 3x - 40 = 0

Δ = 9 + 160
Δ = 169

x = -3 +-√169/2
x = -3 +-13/2

x' = -3+13/2
x' = 10/2 = 5

x'' = -3 -13/2
x'' = -16/2 = -8          pode ser 5 ou -8          ok