Сократите дроби: 17a^3b + 17a^4c/ 51a^2b^2 - 51a^4c^2 c^2 - 18c + 81/ c - 9 - id389195020210727 от Marmanril12 27.07.2021 08:18

Question

Алгебра: Сократите дроби: 17a^3b + 17a^4c/ 51a^2b^2 - 51a^4c^2 c^2 - 18c + 81/ c - 9

Marmanril12 · Accepted Answer

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)

Сократите дроби: 17a^3b + 17a^4c/ 51a^2b^2 - 51a^4c^2 c^2 - 18c + 81/ c - 9

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