Question

Without finding squares, find the value of 400^2 - 399^2
Answer in full detail​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

answer as follows.

Step-by-step explanation:

400^2-399^2

identity:a^2-b^2=(a+b)(a-b)

(400-399)(400+399)

1×799

=799

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