
To explain: Why you cannot use factoring by grouping on a polynomial with three terms.

Answer to Problem 56HP
Factoring with grouping cannot be possible in three terms polynomial because we cannot make groups of pairs of terms.
Explanation of Solution
Calculation:
We are not able to make group of the pair of terms in case of three terms polynomial while factoring by grouping method.
Grouping method can be used to factor a polynomial having four terms because we can make group of pair of terms and then factored out the GCF from each group.
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