Question

Solve these question with full solution.(given in attachment)​

Answer 1

Answer:

Step-by-step explanation:

(a)  $3xy* 5x^{2}y$

= $15x^{3}y^{2}$

(b)$7xy^{2} z * -3x^{2} yz*5nyz^{2}$

= $-105x^{3} y^{4} z^{4} n$

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