выделите полный квадрат квадратного трехчлена х2+8х-5 выделите полный квадрат кв...

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выделите полный квадрат квадратного трехчлена х2+8х-5
выделите полный квадрат квадратного трехчлена 3х2+6х+1

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NNNLLL54

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$x^2\pm px+q=(x\pm \frac{p}{2})^2-(\frac{p}{2})^2+q\\\\x^2+8x-5=(x+4)^2-4^2-5=(x+4)^2-21\\\\\\3x^2+6x+1=3(x^2+2x+\frac{1}{3})=3((x+1)^2-1+\frac{1}{3})=\\\\=3((x+1)^2-\frac{2}{3})=3(x+1)^2-2$

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