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davron96
@davron96
July 2022
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вычислите значение выражения x^3-y^3-2y^2+x^2-3y-1-2xy , если x=71,8; y= 70,8
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lanavol4ica
Х'3-у'3-2у'2+х'2-3у-1-2ху
х'3=71,8×71,8×71,8= 370146.232
у'3=70,8×70,8×70,8= 354894.912
2у'2=2×(70,8×70,8)= 10025.28
х'2=71,8×71,8= 5155.24
3у=3×70,8= 212,4
...
2ху=2×71,8×70,8= 10166.88
370146.232 - 354894.912 - 10025.28 + 5155.24 - 1 - 10166.88 =
=213.4
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Thanks 1
davron96
боже какой труд.. на экзамене так решать не получится, но все равно спасибо!
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Answers & Comments
х'3=71,8×71,8×71,8= 370146.232
у'3=70,8×70,8×70,8= 354894.912
2у'2=2×(70,8×70,8)= 10025.28
х'2=71,8×71,8= 5155.24
3у=3×70,8= 212,4
...
2ху=2×71,8×70,8= 10166.88
370146.232 - 354894.912 - 10025.28 + 5155.24 - 1 - 10166.88 =
=213.4