Question

Подайте трехчлен в виде квадрата двохчлена.
(P.S. Там 4 примера)

Answer 1

Ответ:

$4.$

$\frac{9}{16} m^2+2mn+\frac{16}{9} n^2=(\frac{3}{4}m)^2+2*(\frac{3}{4}m*\frac{4}{3}n)+(\frac{4}{3}n)^2=(\frac{3}{4}m+\frac{4}{3}n)^2$

$b^2-2a^2b+a^4=b^2-2*(a^2b)+(a^2)^2=(b-a^2)^2$

$9a^2+6ab+b^2=(3a)^2+2*(3ab)+b^2=(3a+b)^2$

$0.64p^2+1.6pz+z^2=(0.8p)^2+2*(0.8pz)+z^2=(0.8p+z)^2$