Question

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Answer 1

Step-by-step explanation:

1) cofficient of xy is 2 and x² is 3

2) cofficient of xy is -1 and x² is 1

3) cofficient of x²y² is 3 and xyz is -4

4) cofficient of ab is 1, bc is -1 and ac is -1

5) cofficient of x is 1/3, y is -5/4 and xy is 1/2

6) cofficient of x² is 0.6, y² is -1 and z² is 1.6

........666......