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What is the factoring by grouping? When factoring a trinomial, why is it necessary to write the trinomials in four terms?

I will be happy to critique your thinking on this.

I do not understand to even answer it?

How do we determine the common factors in an expression? Also When factoring a trinomial, why is it necessary to write the trinomials in four terms

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asked by jenn
  1. this is 3rd ques of jiskha

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    posted by Frank

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