is 7^5*3^2*5+3a composite number.
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yes it is as if we take 3 common from whole
we will be left with3 ( 7^5*1^2*5+1)
hence by solving this u will be left with 3 x a no. other that 1
hence the nom is composite as it has factors other than 1 and itself..
we will be left with3 ( 7^5*1^2*5+1)
hence by solving this u will be left with 3 x a no. other that 1
hence the nom is composite as it has factors other than 1 and itself..
knligma:
i want justify the answer
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