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Nikky756
@Nikky756
July 2022
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(3a-1)(2a+1)-(3a-1)^2 при а=0,3 плеес
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Verified answer
(3а - 1)(2а + 1) - (3а -1)^2 = 6a^2 - 2a +3a - 1 - 9a^2 +6a -1 =
= - 3a^2 + 7a - 2 → при а = 0,3 → = -3*0,09 + 7*0,3 - 2 = - 0,27+3,1-2 =
= 3,1 - 2,27 = 0,83
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Verified answer
(3а - 1)(2а + 1) - (3а -1)^2 = 6a^2 - 2a +3a - 1 - 9a^2 +6a -1 == - 3a^2 + 7a - 2 → при а = 0,3 → = -3*0,09 + 7*0,3 - 2 = - 0,27+3,1-2 =
= 3,1 - 2,27 = 0,83