Correct Answer: Option B

Explanation

6^{2x + 1} + 7(6^x) - 5

Let 6^x = y....(i)

6y^x + 7y - 5 = 0

(3y + 5)(2y - 1) = 0.....(i)

Subt. for y from eqn. (i) in eqn. (ii)

= [3(6^x) + 5][2(6^x) - 1]

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