Question

evaluate:
$5^{n} \times 25 {}^{n - 1 } \div (5 {}^{n {}^{ - 1} } \times 25 {}^{n {}^{ - 1} } )$
​

Answer 1

Answer:

5

n

×25

n−1

÷(5

n−1

×25

n−1

)

It can be written as

=5n×25

n−1

×

(5

n−1

×25

n−1

)

1

By further calculation

=5

n

×

5

n−1

1

So we get

=5

n–n+1

=5

1