graph : y=x-2, y=7x+4

Step-by-step explanation:

So we start with the original expression to be:

so we need to first split the square root into two, one for the numerator and another one for the denominator so we get:

we can now simplify that so we get:

we can now rationalize the denominator by multiplying the fraction by

so we get:

we do the multiplication so we end up with:

which simplifies to: