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Arayati ca orice at fi x rezultaul va fi la fel
(2x-3)²-x(3x-10)-(x-1)²


Răspuns :


[tex]({4x}^{2} - 2 \times 2x \times 3 + 9) - ( {3x}^{2} - 10x) - ( {x}^{2} - 2x + 1) \\ {4x}^{2} - 12x + 9 - {3x}^{2} + 10x - {x}^{2} + 2x - 1 \\ - 12x + 9 + 10x + 2x - 1 \\ 9 - 1 = 8[/tex]