Question

10) Resolva a equação sendo V=iR
x²5x+4=0​

Answer 1

x²-5x+4=0 => -b/c = 5/4 = 1+4/1•4 => S:{1,4}

x²+5x+4=0 -b/c =-5/4=-1-4/-1•-4 > S:{-1,-4}