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July 2022
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Замените звездочки такими одночленами, чтобы образовалось тождество: (*-*) ^3=*-15x^2+*-*
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kirichekov
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(*-*)³=* - 15x²+*-*
(*-*)³ - куб разности, => -15x²=-3*x²*5
(x-5)³=x³-3*x² *5+3*5² *x-5³=
x³-15x²+75x-125
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(*-*)³=* - 15x²+*-*(*-*)³ - куб разности, => -15x²=-3*x²*5
(x-5)³=x³-3*x² *5+3*5² *x-5³=x³-15x²+75x-125