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July 2022
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Найдите значение выражения 28ab+(2a-7b)^2 при a=√15 b=
√8
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tanya2512
Verified answer
28√15√8+(2√15-7√8)^2=28√120+(2√15)^2-2*2*7√15√8+(7√8)^2=
=28√120+4*15-28√120+49*8=60+392=452
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Verified answer
28√15√8+(2√15-7√8)^2=28√120+(2√15)^2-2*2*7√15√8+(7√8)^2==28√120+4*15-28√120+49*8=60+392=452