What is the composition (f∘g)(x)(f \circ g)(x)(f∘g)(x) if f(x)=x2f(x) = x^2f(x)=x2 and g(x)=xg(x) = \sqrt{x}g(x)=x for x≥0x \geq 0x≥0?
x2x^2x2
x2\sqrt{x^2}x2
xxx
∣x∣|x|∣x∣