Answer:
35 + 7x
Step-by-step explanation:
Distribute
7x5=35
7x(x)=7x
7x +35
20736
xy^4 = z
x=4 , y=3
(4*3)^4=z
12^4=z
z=20736
630
15×2=30
40×(-15)=-600
30-(-600)=630