Question

16) Find ‘m’ so that

(-3)^m+1 × (-3) × (81) = (-3)^7​

Answer 1

Answer:

(−3)

m+1

×(−3)

5

=(−3)

7

(−3)

m+1+5

=(−3)

7

(−3)

m+6

=(−3)

7

On both the sides powers have the same base different from 1 and -1, so their exponents must be equal.

Therefore, m + 6 = 7

or m = 7 - 6 = 1