$$\(5 E=n^{2}+n+5\)$$ Ali thinks that the value of $$\(E\)$$ will be a prime number for any whole number value of $$\(n\)$$. Is Ali correct? You must give a reason for your answer.

Mathematics
IGCSE&ALevel
EDEXCEL
Exam No:4MA1_1HR_que_20180525 Year:2018 Question No:5

Answer:



Knowledge points:

1: Numbers and the number system

Solution:

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