Question

Please help me with this problem

Answer 1

1, 4, 5.

Explanation:

1. 3x * 3y is equal to 9y.

4. 2x * y * z is equal to 2xyz, since the grouped variables mean the same thing as multiplied.

5. 4x * 4y is 16xy, because 4 * 4 is 16 and x * y is xy.

Answer 2

9xy = 3x . 3y

2xyz = 2x . y . z

4x . 4y = 16xy