Question

Which is equivalent to x^3 y^-7

Answer 1

For this case we must find an expression equivalent to:

`x ^ 3 * y ^ {- 7}`

By definition of power properties we have to meet:

`a ^ {-1} = \frac {1} {a ^ 1} = \frac {1} {a}`

Then, we can rewrite the expression as:

`x ^ 3 * \frac {1} {y ^ 7} =\\\frac {x ^ 3} {y ^ 7}`

Answer:

`\frac {x ^ 3} {y ^ 7}`