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Pandorum1
@Pandorum1
March 2022
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С 250 по 260 ок??????
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juleeekk
250. (3a-4b)*(3a-4b)*(3a+4b)=(3a-4b)*(9a^2-16b^2)=18a^3-48a(b^2)-36(a^2)b+64b^3
251. (b+4)^2-2d(5b+4)=b^2+8b+16-10b^2-8b=-9b^2+16
258. -2c(3c+2)-(-2+c)^2=+6c^2-4c-(4-4c+c^2)=6c^2-4c-4+4c-c^2=5c^2-4
259. 12a-2(a+3)^2=12a-2(a^2+6a+9)=12a-2a^2-12a-18=-2a^2-18
260. -60a+6(a+5)^2=-60a+6(a^2+10a+25)=-60a+6a^2+60a+150=6a^2+150
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Pandorum1
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Pandorum1
самый лучший
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Answers & Comments
251. (b+4)^2-2d(5b+4)=b^2+8b+16-10b^2-8b=-9b^2+16
258. -2c(3c+2)-(-2+c)^2=+6c^2-4c-(4-4c+c^2)=6c^2-4c-4+4c-c^2=5c^2-4
259. 12a-2(a+3)^2=12a-2(a^2+6a+9)=12a-2a^2-12a-18=-2a^2-18
260. -60a+6(a+5)^2=-60a+6(a^2+10a+25)=-60a+6a^2+60a+150=6a^2+150