Ответ:
2) а*(а-2b)/a*(a+3b)*ab*(a+3b)/a²*(a-2b)
b/a
3) (x-5)*(x+5)/x*(x-6)*(x-6)*(x+6)/x*(x+5)
x-5/x*x+6/x
(x-5)*(x+6)/x²
x²+6x-5x-30/x²
x²+x-30/x²
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Ответ:
2) а*(а-2b)/a*(a+3b)*ab*(a+3b)/a²*(a-2b)
b/a
3) (x-5)*(x+5)/x*(x-6)*(x-6)*(x+6)/x*(x+5)
x-5/x*x+6/x
(x-5)*(x+6)/x²
x²+6x-5x-30/x²
x²+x-30/x²