Simplify: x⋅x4\sqrt{x} \cdot \sqrt[4]{x}x⋅4x for x>0x > 0x>0
x3/4x^{3/4}x3/4
x5/4x^{5/4}x5/4
x3/8x^{3/8}x3/8
x7/8x^{7/8}x7/8