Question

find the value of x .
7²×+¹÷49=7³​

Answer 1

Step-by-step explanation:

Correct option is

A

2

we know that,

∵

a

n

a

m

=a

m−n

so,

7

2

7

2n+1

=7

2n+1−2

=7

2n−1

now,

⟹7

2n−1

=7

3

As bases are equal

powers are equal

2n−1=3

n=2