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lilija647
@lilija647
August 2022
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НАЙДИТЕ ЗНАЧЕНИЕ ВЫРАЖЕНИЯ (2а -5 )^2 + а(2-5а ) при а = 2_____
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Rimma200016
4a^(2) - 20a + 25 + 2a - 5a^(2) = -a^(2) - 18a + 25
a=2: -2^(2) - 18*2 + 25 = - 4 - 36 + 25 = -15
a=5: - 25 - 18×5 + 25 = - 90
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Answers & Comments
a=2: -2^(2) - 18*2 + 25 = - 4 - 36 + 25 = -15
a=5: - 25 - 18×5 + 25 = - 90