Answer
3(6a-5)(3a+2)
Work Step by Step
54$a^{2}$-9a-30=3(18$a^{2}$-3a-10)=3(18$a^{2}$+12a-15a-10)=
3[6a(3a+2)-5(3a+2)]=3(6a-5)(3a+2)
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