-a^3 -2a^2 -a = a(-a^2 - 2a -1)= -a(a^2 +2a+1) = -a(a+1)^2
Start by taking out "-a"
-a(a^2 + 2a + 1)
= -a(a + 1)^2
—————————————
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Verified answer
-a^3 -2a^2 -a = a(-a^2 - 2a -1)= -a(a^2 +2a+1) = -a(a+1)^2
Start by taking out "-a"
-a(a^2 + 2a + 1)
= -a(a + 1)^2
—————————————