Объяснение:
[tex]x_2^2+x_2x_1+x_1^2=\\\\=x_2^2+x_2*x_1+\frac{4}{4}x_1^2=\\\\=x_2^2+x_2*x_1+(\frac{1}{4}+\frac{3}{4})x_1^2=\\\\=(x_2^2+x_2*x_1+\frac{1}{4}x_1^2)+\frac{3}{4}x_1^2=\\\\=(x_2^2+x_2*2*\frac{1}{2}x_1+(\frac{1}{2}x_1)^2)+\frac{3}{4}x_1^2=\\\\=(x_2^2+\frac{1}{2}x_1)^2+\frac{3}{4}x_1^2[/tex]
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Answers & Comments
Объяснение:
[tex]x_2^2+x_2x_1+x_1^2=\\\\=x_2^2+x_2*x_1+\frac{4}{4}x_1^2=\\\\=x_2^2+x_2*x_1+(\frac{1}{4}+\frac{3}{4})x_1^2=\\\\=(x_2^2+x_2*x_1+\frac{1}{4}x_1^2)+\frac{3}{4}x_1^2=\\\\=(x_2^2+x_2*2*\frac{1}{2}x_1+(\frac{1}{2}x_1)^2)+\frac{3}{4}x_1^2=\\\\=(x_2^2+\frac{1}{2}x_1)^2+\frac{3}{4}x_1^2[/tex]
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