Выделите в трехчлене квадрат двучлена1) x^2 -2x+ c2)x^2 + bx + c . Created by 246691. algebra-ru

Выделите в трехчлене квадрат двучлена1) x^2 -2x+ c2)x^2 + bx + c ...

July 2022 1 3 Report

Выделите в трехчлене квадрат двучлена
1) x^2 -2x+ c
2)x^2 + bx + c

Answers & Comments

emerald0101 1) $x^2 -2x+ c=(x^2 -2x+1)-1+ c=(x-1)^2+c-1;$
2) $x^2 + bx + c=(x^2 + 2* \frac{b}{2}*x+ \frac{b^2}{4})-\frac{b^2}{4}+ c=(x+ \frac{b}{2})^2- \frac{b^2-4c}{4};$

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