10. 17ᵃ = 1/289 va 3ᵇ = 1/243 bo‘lsa, ab ning qiymatini toping.

1/289 = 17⁻², demak a = −2. 1/243 = 3⁻⁵, demak b = −5.

Javob: ab = (−2)(−5) = 10.