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Kristina2911q
@Kristina2911q
July 2022
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найдите значение выражения (4b+9)^2-8b(5b+9) при b=корень 22
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Вероника576
(16b^2+72b+81)-40b^2-72b=16b^2+72b+81-40b^2-72b= -24b^2+81
-24b^2+81=0
24b^2-81=0
При b=
√22 ,
24(√22)^2-81=24*22-81=528-81=447
1 votes
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Answers & Comments
-24b^2+81=0
24b^2-81=0
При b=√22 , 24(√22)^2-81=24*22-81=528-81=447