Question

resolva
a) 10x/3 + 3/x = 7

Answer 1

10x/3 + 3/x = 7 (mmc = 3x)

10x² + 9 = 21x
10x² - 21x + 9 = 0

Δ=(-21)² - 4(10)(9)
Δ = 441-360
Δ=81 ⇒ √Δ = 9

x1 = (21+9)/20 = 3/2
x2 = (21-9)/20 = 12/20 = 3/5

S = {x = 3/2 ou x = 3/5}

Espero ter ajudado