1.

(v)9 × 81 x = 272-x

Answer»

9 x 81^x = 27^2 - x(3)^2 x (3)^4x = (3)^6-2x(3)^[2+4x] = (3)^[6-2x]

Base is same so powers are equal

Therefore, 2 + 4x = 6 - 2x6x = 4x = 4/6 = 2/3



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