Q. 5 B4.0( 2 Votes )

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Answer :

i. 3x = 81

3x = 34 ( 34 = 81)


x = 4 ( base is same)


ii. 3x + 3 = 34 + 3


3x + 3 = 37


3x + 3 = 3× 3× 3× 3× 3× 3× 3


3x + 3 = 2187


iii.





iv. 32x = 32×4


32x = 38


32x = 3 × 3× 3× 3× 3× 3× 3× 3


32x = 6561


v. 3x – 6 = 34 – 6


3x – 6 = 3–2



( Reciprocal law: If ‘a’ is a real no. and m is a positive integer, then )




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