Question

3x² - 7 × + 4=0 qual a resposta ? ​

Answer 1

3x²-7x+4=0

→ a=3

→ b=-7

→ c=4

→ Δ=b²-4ac

→ Δ=(-7)²-4·3·4

→ Δ=49-48

→ Δ=1

→ x= (-b±√Δ)/2a

→ x=((-7)±√1)/2·3

→ x=(7±1)/6

→ x'=(7-1)/6

→ x'=6/6

${\boxed{\sf \ \red{x=1}}}$

→ x''=(7+1)/6

→ x''=8/6 (simplifique por 2)

${\boxed{\sf \ \red{x=4/3}}}$

RESPOSTA FINAL ⇒ ${\boxed{\sf \ \red{S={1 ; 4/3}}}}$