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kirdasan1
@kirdasan1
July 2022
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найдите значение выражения (2+3a)(5-a)-(2-3a)(5+a) при a= 1,5
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Verified answer
(2 + 3a)(5 - a) - (2 - 3a)(5 + a) = 10 - 2a + 15a - 3a² - 10 - 2a + 15a + 3a² =
= 26a
Если a = 1,5 , то
26 * 1,5 = 39
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Answers & Comments
Verified answer
(2 + 3a)(5 - a) - (2 - 3a)(5 + a) = 10 - 2a + 15a - 3a² - 10 - 2a + 15a + 3a² == 26a
Если a = 1,5 , то
26 * 1,5 = 39