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алгебра алгебра алгебра алгебра алгебра алгебра...

riannna53

$\displaystyle\bf\\12c(12c+12)-(12c-12)(12+12c)=144c^{2} +144c-\Big[(12c)^{2} -12^{2} \Big]=\\\\=144c^{2} +144c-144c^{2} +144=144c+144=144\cdot(c+1)\\\\c=4,8\\\\144\cdot(4,8+1)=144\cdot5,8=835,2$

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Verified answer

12•4,8(12•4,8+12)-(12•4,8-12)(12+12•4,8)
12•4,8(57,6+12)-(57,6-12)•(12+57,6)
12•4,8•69,6-45,6•69,6
4008,96-3173,76
835,2
если там надо упростить то извините(

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