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motorcrossteamD21
Factor 5a^3 + 15a^2 – 6a – 18 (a2 – 6)(5a + 3) (5a2 – 3)(a + 6) (5a2 – 6)(a + 3) (a2 + 6)(5a – 3)
5 common from 1st 2 terms,,-6 common from last 2,,hope you continue it from here..
correction : not 5 but 5a^2 common from 1st 2 ..