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Prove that the value of the expression: 731^2−631^2 is divisible by 100

User Richaux
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Answer:

Explanation:

731² - 631² is the difference of squares.

731² - 631² = (731+631)(731-631) = 1362×100

therefore, 731² - 631² is divisible by 100

User XYz Amos
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