Resposta:
B.
[tex]x\sqrt{x^5} = x\sqrt{x^2\times x^2 \times x} = x\times x\times x\sqrt{x} = x^3\sqrt{x}[/tex]
C.
[tex]{2-2}\frac{x^2}{y} \sqrt{x^3y^2} =\\\\ y \times \frac{x^2}{y} \sqrt{x^2\times x} = \\\\x\times x^2\sqrt{x} =\\\\ x^3\sqrt{x}[/tex]
D.
[tex]x^3\sqrt{y^4} = x^3\times y^2[/tex]
