Question

Разложи на множители: 1,4x^2+2,8xy+1,4y^2

Answer 1

$1.4x^2+2.8xy+1.4y^2= \frac{7}{5} x^2+ \frac{14}{5} xy+ \frac{7}{5} y^2]= \frac{7}{5} (x^2+2xy+y^2)$ =$\frac{7}{5} (x+y)^2$

Answer 2

1,4х²+2,8ху+1,4у²=1,4(х²+2ху+у²)=1,4(х+у)²=1,4(х+у)(х+у)