Ответы на вопрос:
А) x² + 3x / x - 4 = x² / 4 - x (x² + 3x) • (4 - x) = x² • (x - 4) (x² - x³ + 12x - 3x² - x³ + 4x² = 0 5x² - 2x³ + 12x = 0 x • (5x - 2x² + 12) = 0 x • (-2x² + 5x + 12) = 0 x • (-2x² + 8x - 3x + 12) = 0 x • (-2x • (x - 4) - 3 • (x - 4)) = 0 x • (-2x - 3) • (x - 4) = 0 x2 = 0 x1 = -3/2 b) 5/y+3 - 3/y = 2-y/y²+3 5/y+3 - 3/y - 2-y/y²+3y = 0 5/y+3 - 3/y - 2-y/y•(y+3) = 0 5y-3(y+-y)/y•(y+3) = 0 5y-3y-9-2+y/y•(y+3) = 0 3y-11/y•(y+3) = 0 3y - 11 = 0 3y = 11 y = 11/3 y = 3 2/3
Популярно: Алгебра
-
никитос7380309.09.2022 13:52
-
4052307.03.2021 23:32
-
kiryagartman13.06.2023 11:37
-
Dipper1710.09.2022 08:19
-
cvacvadav18.05.2023 08:07
-
MCKiri4PrO16.04.2020 17:52
-
Lokator50531.05.2023 19:21
-
artemhkolnik21.11.2021 01:45
-
kanony10.04.2023 01:21
-
arinakurbatovu15.04.2022 10:35