Question

X a quarta- 7x ao quadrado + 6 = 0

Answer 1

Resposta:

x⁴-7x²+6=0

y=x²

y²-7y+6=0

y'=[7+√(49-24)]/2 =(7+5)/2=6

y''=[7-√(49-24)]/2 =(7-5)/2=1

y=6=x²  ==>x=±√6

y=1=x² ==>x=±√1 =±1