Question

(3a+1)(a³/5-a+1)= please fast​

Answer 1

Answer:

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3a(a³/5-a+1)+1(a³/5-a+1)

3a*4/5-3a²+3a+a³/5-a-1

3a*4-15a²+15a+a³-5a-5

3a*4+a³-15a²+10a-5=0