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Cat face (2x-3)^2+4?

Răspuns :

 = 4 ·x² - 12x + 9 + 4 = 4·x²  -12x +13
[tex]\rm (2x-3)^2+4= \\ \\ 4x^2+9-12x+4= \\ \\ \bold{=4x^2-12x+13}[/tex]