1. 5×11×13+13 is a _____ number.
2. for a,b (a≠b) rational number (√a+√b) (√a-√b) is a ______ number.
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1. 5×11×13+13 is a _____ number.
2. for a,b (a≠b) rational number (√a+√b) (√a-√b) is a ______ number.
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Answer:
I can't understand.......
Answer:
1. It is a composite number(product of any two numbers is a composite number)
Step-by-step explanation:
=13(5*11+13)
=13(55+13)
=13(68)