Question

plss plss isko solve krdo



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(9ⁿ+¹)-(9ⁿ)=72




answersheet answer is​

Answer 1

Answer:

n=1

Step-by-step explanation:

9^n×9^1-9^n=72

9^n(9-1)=72

9^n=72/8

9^n=9^1

n=1

Answer 2

Hey Miss

Here's The Answer

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Rule :- If bases are in multiplication and are same, power will be added,

for ex : xᵃ × xᵇ = x⁽ ᵃ ⁺ ᵇ ⁾

ATQ

=> ( 9ⁿ⁺¹ ) - ( 9ⁿ ) = 72

We can write 9ⁿ⁺¹ as 9 × 9ⁿ

=> 9 × 9ⁿ - 9ⁿ = 72

taking 9ⁿ common

=> 9ⁿ ( 9 - 1 ) = 72

=> 9ⁿ ( 8 ) = 72

=> 9ⁿ = 72/8

=> 9ⁿ = 9

Comparing powers

=> 9ⁿ = 9¹

=> n = 1 ✓

Hope It Helps ^^