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WARRIOR [948]
2 years ago
7

Find the sum: (x2 + 2x + 3) + (3x2 + x + 1)

Mathematics
1 answer:
Diano4ka-milaya [45]2 years ago
4 0

Answer:

The answer is C

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In statistics and econometrics, the first-difference (FD) estimator is an estimator used to address the problem of omitted variables with panel data. It is consistent under the assumptions of the fixed effects model. In certain situations it can be more efficient than the standard fixed effects (or "within") estimator.

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