Question

Determine os zeros da funça F(x)=-x+x+6

Answer 1

-x² +x +6 = 0 ==> corrigida

∆=1² -4.(-1).6= 1 +24= 25 => √∆=5

x' = -b+√∆/2a = -1+5/-2 = 4/-2 = -2 ✓

x" = -b-√∆/2a = -1-5/-2 = -6/-2 = 3 ✓