Question

Given y = 3/(5√x) . The expression for y² is:

A. 6/(10x²)

B. 9/(25x²)

C. 6/(10x)

D. 9/(25x)

Answer 1

$$y^2=\big(\dfrac{3}{5\sqrt{x}}\big)^2=\dfrac{3^2}{5^2(\sqrt{x})^2}=\dfrac{9}{25x}, x>0$$

D. 9/(25x)