Question

I need help solving this problem

Answer 1

`3x^7{\cdot} (4x^(-5))^2=(48)/(x^3)`

Explanation:

We need to simplify the given expression :

`3x^7{\cdot} (4x^(-5))^2`

Use property :
`x^(-a)=(1)/(x^a)`

`3x^7{\cdot} ((4)/(x^5))^2\\ =3x^7{\cdot} (16)/(x^(10))\ \ [\because (x^a)^b=x^(a* b)]\\\\=(48)/(x^3)`

So, the simplified form of the given expression is
`(48)/(x^3)`