Question

А²-4/аб-2б-3а+6 "/"-знак дроби

Answer 1

А²-4 разложим пр формуле а²-b² =(а-b)(a+b) 
получаем (а-2)(а+2)/ аb - 2b -3a+6
посмотрим на аb - 2b -3a+6 
b  и -3 выносим за скобки получаем b(a-2)-3(a-2)
смотрим дальше получается  (a-2)(b-3)
смотрим на получившееся (a-2)(a+2)/(a+2)(b-3) 
a-2 сокращаем 
получаем:
а+2/b-3

Answer 2

To clarify, it seems like you're asking about a specific expression involving variables "а" and "б" and a fraction sign ("/"). However, the expression you provided seems to be incomplete or not well-formed. There might be missing parentheses or operators, making it difficult to understand the exact meaning of the expression.

Please provide a properly formatted expression, including any missing operators or parentheses, and I'll be glad to help you simplify or solve it. If you have any specific questions or concerns about the expression, feel free to mention them as well.