A 2a+3
B 2a-3
C 3a+5
D 2a-3
Correct Answer: Option A
6a2-a-15=0
⇒ 6a2 +9a-10a-15=0
⇒ 3a(2a+3)-5(2a+3)=0
⇒ (2a+3)(3a-5)=0
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