Look at the following expression. Are there any values of x for which the expression is not defined under the set of real numbers? Explain your reasoning. (2 points)

The expression is not defined at x= -2 & for all values of x  less than -2 .

Step-by-step explanation:

We have , a given expression as : Basically we need to find domain for this function and see for which values of x the above function is undefined . Domain of a function is the set of values of x for which the function is defined . We have a rational expression,  it's a fractional function which means denominator can be 0 . Denominator =

⇒

⇒

⇒

So , . Also , Denominator is a square root expression so it can't be negative inside root ∴ ⇒ i.e. x must be greater than -2.

Therefore, the expression is not defined at x= -2 & for all values of x  less than -2 .

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: