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Answer 1

Answer:7 x²z

Step-by-step explanation:

42x³y²z⁴/6xy²z³= 7x³-¹×y²-y²×z⁴-³

= 7x²x.

Answer 2

Step-by-step explanation:

(42x³y²z⁴) / (6 xy²z²)

$= 7({x}^{3 - 1} ) ({y}^{2 - 2})( {z}^{4 - 3}) \\ = 7 {x}^{2} {y}^{0} {z}^{1} \\ = 7 {x}^{2} z$

Since a^m/a^n=a^(m-n)