Ответ:
[tex]1)(x - 3)(x + 3) = x {}^{2} + 3x - 3x - 9 = x {}^{2} - 9[/tex]
[tex]2)2x(x - 3) - (x - 2) \times 2 = 2x {}^{2} - 6x - 2x + 4 = 2x {}^{2} - 8x + 4[/tex]
третє не зрозуміла
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Ответ:
[tex]1)(x - 3)(x + 3) = x {}^{2} + 3x - 3x - 9 = x {}^{2} - 9[/tex]
[tex]2)2x(x - 3) - (x - 2) \times 2 = 2x {}^{2} - 6x - 2x + 4 = 2x {}^{2} - 8x + 4[/tex]
третє не зрозуміла