Which expression is equivalent to square root 55x^7y^6/11x^11y^8 ? assume x > 0 and y > 0.(ignore)  which expression is equivalent to  ? assume  x  > 0 and  y    0.

The first step for solving this expression is to reduce the fraction with 11.

Now reduce the fraction with 

Reduce the fraction with 

Lastly,, we need to remember our radical rules. They state that in order for us to take a root of a fraction,, we must take the root of the numerator and denominator separately. Knowing this rule,, this changes the expression to the following:

Since we cannot simplify the expression any further,, the correct answer to your question is going to be ,, or option C.
Let me know if you have any further questions.
:)

Whose mistake? can you give more details to what the question is asking?