Question

Срочно! Даю 50 баллов!

Answer 1

$x^2+2ax+a^2=(x+a)^2\\b=2a; ; to ; ; a=frac{b}{2}; ; to ; ; a^2=(frac{b}{2})^2=frac{b^2}{4}\\\x^2+bx+frac{b^2}{4}=(x+frac{b}{2})^2$