Question
Factor each expression by grouping three terms and two terms.$$a^{4}+2 a^{3}+a^{2}+a+1$$
Step 1
Step 1: First, we group the first three terms and the last two terms separately: $$a^{4}+2 a^{3}+a^{2}+a+1 = (a^{4}+2 a^{3}+a^{2}) + (a+1)$$ Show more…
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