Question

if 3m=81,find 3^m-2and3^m+2​

Answer 1

Answer:

3

m

2

÷(3m)

2

]

1/m

=87

⇒ (3

m

2

÷3

2m

)

1/m

=3

4

⇒ (3

m

2

−2m

)

1/m

=3

4

⇒ 3

m

2

−23

=3

4

on equation the power we get

(since passes are same)

⇒

m

m

2

−2m

=4

m

2

−2m−4m=0

m

2

−6m

m(m−6)=0m=6

Option B is correct

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