Add The Following
(1) xy-yz , yz+xy
(2) 3x²y²-4xy+5 , 2x²y²+3xy-7
(3) 7xy +4xz-2yz , 2xy-3xz +6yz
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Answer:
Step-by-step explanation:
(1) xy-yz, yz+xy
xy-yz+(yz+xy)
xy-yz+yz+xy
=2xy
(2) 3x²y²-4xy+5, 2x²y²+3xy-7
(3x²y²-4xy+5)+(2x²y²+3xy-7)
=3x²y²-4xy+5+2x²y²+3xy-7
=5x²y²-xy-2
(3) 7xy +4xz-2yz, 2xy-3xz +6yz
(7xy +4xz-2yz)+(2xy-3xz +6yz)
7xy +4xz-2yz+2xy-3xz+6yz
=9xy+xz+4yz
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