Question

let

A = 15x² + 12y² + 14xy + 19,
B = 34x² – 12xy + 19y² + 17 and C = 21x² – 5y² + 17xy + 7.

find: C – A + B

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Answer 1

Answer:

40x²+26y²19xy +43

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Answer 2

see the attachment ...

bimistaken I written variable term first you write it correctly ... you just have interchange their place .