25 points!
Just checking is the answer
20y^8y^3

Answer:
[tex] \boxed{D. 20 {x}^{6} {y}^{4}} [/tex]
Step-by-step explanation:
[tex](5 {x}^{2} y)(4 {x}^{4} {y}^{3} ) = 20 {x}^{6} {y}^{4} [/tex]
Rule need to remember to solve such questions:
[tex] {a}^{x} \times {a}^{y} = {a}^{x + y} [/tex]
Answer:
No its the fourth option
Step-by-step explanation:
Add common expressions