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Factors & divisibility

A teacher writes the following product on the board:
(7a3)(2a+1)=14a2+a3(7a-3)(2a+1) = 14a^2+a-3
José says that 2a+12a+1 is a factor of 14a2+a314a^2+a-3.
Amira says that 14a2+a314a^2+a-3 is divisible by 2a+12a+1.
Who is correct?
Choose 1 answer:
Choose 1 answer: