Question

For what values of x is the expression below defined?A.x < 1B.x < 0C.x = 0D.x > 0

Answer 1

$\frac{\sqrt{2x^2}}{\sqrt{5x}}$

As we can see, we have a radical expression and a quotient. Since we can't divide by zero:

x must be different than 0

$x\ne0$

Also, x must be positive since a negative x would result into a negative radicand for the denominator, so:

$x>0$

Answer:

D