Ответы на вопрос:
1) (х + 2)*(x - 2)/ (х - 1)(x - 2) = (x² - 4) / (х - 1)(x - 2) = (x² - 4) / (x² - 3x + 2) (х + 1) (x - 1) / (х - 2)(x - 1) = (x² - 1) / (х - 2)(x - 1) = (x² - 1) / (x² - 3x + 2) 2) (х - 3) (x - 3)/ (х + 3)(x - 3) = (x - 3)² / (x² - 9) х*(x + 3) / (х - 3)(x + 3) = x*(x + 3) / (x² - 9) 3) (3 + х)(x - 3) / (х - 5)(x - 3) = (x² - 9) / (х - 5)(x - 3) = (x² - 9) / (x² - 8x + 15) х*(x - 5) / (х - 3)(x - 5) = х*(x - 5) / (x² - 8x + 15) 4) (х + 1)(x + 2) /x*(x² - 4) = (x² + 3x + 2) /x*(x² - 4) x (4 + х) / x( x² - 4)
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