Question

resolva as inequacoes do 2 grau letra a=-x2+1<0

Answer 1

Resolva as inequacoes do 2 grau letra a=-x2+1<0

- x² + 1 < 0
- x² < - 1
x² < (-)(-)
x² < + 1

x < + - √1      ( lembrando que: √1 = 1)

assim
x' < - 1
x" = < + 1