Question

I need help ASAP!!

The answer that is selected is not wat i picked, it was by accident

Answer 1

`(64)/(49)`

Explanation:

As we can see the given expression as three complex parts and all are being multiplied.

Lets simplify each part separately and then multiply all of them in the end

Part1

`((8.4.2)/(8.7))^(2)`

Cancelling 8 in numerator with 8 in denominator

`((4.2)/(7))^(2)`

`((8)/(7))^(2)`

`(64)/(49)`

Part2

`((8^(0) )/(7^(-3) ))^(3)`

simpliying

`((1)/(7^(-3) ))^(3)`

`({7^(3) })^(3)`

`7^(9)`

Part3

Third part is
`7^(-9)`, and it does not need to be further simplified

Now multiplying all the three parts

`(64)/(49).7^(9).7^(-9)`

`(64)/(49).7^(9-9)`

`(64)/(49).7^(0)`

`(64)/(49).1`

`(64)/(49)`

So our final answer is
`(64)/(49)`