Ответ:
39999
Объяснение:
Т.к. (a - b)(a + b) = a^2 - b^2, то
201 * 199 = (200 + 1)(200 - 1) = 200^2 - 1^2 = 40000 - 1 = 39999
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Ответ:
39999
Объяснение:
Т.к. (a - b)(a + b) = a^2 - b^2, то
201 * 199 = (200 + 1)(200 - 1) = 200^2 - 1^2 = 40000 - 1 = 39999