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07-02-2021
Mathematics

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Prove that with any natural number n (5n-4)^2-(2n+11)^2 divides by 21

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07-02-2021

Answer:

let natural no be 1

(5.1-4)^2-(2.1+11)^2/21

25-16-4-121/21

-5.52

Step-by-step explanation:

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