From the sum of 2у² + 3 y z , – у² – y z – z² and y z + 2 z² subtract the sum of 3 у² – z² and -у² + y z + z²

1 thought on “From the sum of 2у² + 3 y z , – у² – y z – z² and y z + 2 z² subtract the sum of 3 у² – z² and -у² + y z + z²”

1. Answer:

   -y²+2yz+z²

   Step-by-step explanation:

   2y²+3yz-y²-yz-z²+yz+2z²=y²+3yz+z²

   threfore 2y²+yz

   y²+3yz+z²-2y²-yz= -y²+2yz+z²

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