Задача 66041 ...

6340190268d03f5a3a59cf4d

07.10.2022 15:20:34

Виконайте дії:x²/x²-9 - x/x-3

5f3ea7e3faf909182968ddd9

07.10.2022 18:47:26

★

(x²)/(x²–9) –( x)/(x–3)=(x²)/((x-3)(х+3)) –( x)/(x–3)=(x²)/((x-3)(х+3)) –( x)(x+3)/(x–3)(x+3)=

=(x²)/((x-3)(x²+3x)) –( x+3x)/(x–3)(x+3)=(x²-x²-3x)/((x-3)(х+3)) =[b](-3x)/(x^2-9)[/b]