Answer:
7 x² y z⁴ = 7 ⋅ x² ⋅ y ⋅ z³ ⋅ z
21 x² y⁵ z³ = 7 ⋅ 3 ⋅ x² ⋅ y ⋅ y⁴ ⋅ z³
Step-by-step explanation:
i believe the answer is x^8 y^12 z^4
