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lizacom201
@lizacom201
August 2022
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СРОЧНО! Упростите выражение (a+b)2−(b−a)2 и найдите его значение при a=0,5 и b=2.
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Universalka
Verified answer
(a + b)² - (b - a)² = a² + 2ab + b² - b² + 2ab - a² = 4ab
Если a = 0,5 , а b = 2 , то
4ab = 4 * 0,5 * 2 = 4
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Answers & Comments
Verified answer
(a + b)² - (b - a)² = a² + 2ab + b² - b² + 2ab - a² = 4abЕсли a = 0,5 , а b = 2 , то
4ab = 4 * 0,5 * 2 = 4