Question

Pls tell this answer somebody fast ​

Answer 1

x = 2

Explanation:

Using the rule of exponents

`(a^(m) )/(a^(n) )` =
`a^((m-n))`

Note that 49 = 7² and 343 = 7³

Consider the left side, that is

`(7^(2x+1) )/(7^2)` =
`7^((2x+1-2))` =
`7^((2x-1))` , thus

`7^((2x-1))` = 7³

Since bases on both sides are equal, equate the exponents, that is

2x - 1 = 3 ( add 1 to both sides )

2x = 4 ( divide both sides by 2 )

x = 2