Question

X4 -5X2+4 =0 fórmula de Bhaskara​

Answer 1

×⁴-5ײ+4=0

y²-5y+4=0

∆=(-5)²-4.1.4

∆=25-16

∆=9

y=5±3/2

y'=5+3/2=8/2=4

y"=5-3/2=2/2=1

S={4,1}