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B
xy−1z3+xy2z
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C
y−1z3+xy2z
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D
xy−1z3+xy2
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Solution
The correct option is Ay−1z3+xy2 We use distributive law to multiply a monomial and a binomial, as shown below: (x−1yz2)(xy−2z+x2yz−2) =(x−1yz2×xy−2z) + (x−1yz2×x2yz−2) =y−1z3+xy2