(d) xy - yz + 2; 2yz + xy - 7 and 3xy + 3y2 + 3
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Answer:
5xy+yz+3y2+5
Step-by-step explanation:
xy-yz+2+2yz+xy-7+3xy+3y2+3
xy+xy+3xy-yz+2yz+3y2+2+3
5xy+yz+3y2+5
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