1. Представьте в виде дроби: [tex] \frac{5}{c+3} - \frac{5c-2}{ c^{2}+3 } [/tex]


2. Найдите значение выражения: [tex]\frac{ a^{2}- b }{a} -a [/tex] При a=0.2 и b=-5

3. Упростить выражение: [tex] \frac{3}{x-3} - \frac{x+15}{ x^{2} -9} - \frac{2}{x} [/tex]
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