use properties of exponents to simplify

[Greta]

Is this right?

Evaluate or simplify:

2x [sup:19u5eftf]-6[/sup:19u5eftf]y[sup:19u5eftf]5[/sup:19u5eftf]
16x[sup:19u5eftf]3[/sup:19u5eftf]y[sup:19u5eftf]-2[/sup:19u5eftf]

= y[sup:19u5eftf]7[/sup:19u5eftf]
8x[sup:19u5eftf]9[/sup:19u5eftf]

 

[wjm11]

Your work is correct.