Answer:
B ,C
Step-by-step explanation:
A- This is addition .Finding a product refers to multiplication,so this is not correct .
B-This is multiplication of 5x × 5y, exactly two factors ,so this is correct.
C- This is multiplication of (x-y) ×(x+y).Each equation inside the parenthesis equals one factor,so this is multiplication of exactly two factors .This answer is also correct
D-This is multiplication of three factors x× y× z, and is not correct
I hope my answer can help you
