Answer:
[tex]\frac{3x^{4}+10x^{2} }{5}[/tex]
Step-by-step explanation:
[tex]2x^{2} + x^{3}(\frac{6x}{10} )[/tex]
[tex]2x^{2} + x^{3}(\frac{3x}{5} )[/tex]
[tex]2x^{2} + \frac{3xx^{3}}{5}[/tex]
[tex]\\ 2x^{2} + \frac{3x^{4}}{5}[/tex]
[tex]\frac{5(2x^{2} )}{5} + \frac{3x^{4}}{5}[/tex]
[tex]\frac{5(2x^{2} )+3x^{4}}{5}[/tex]
[tex]\frac{10x^{2} +3x^{4}}{5}[/tex]
[tex]\frac{3x^{4}+10x^{2} }{5}[/tex]