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andrisd

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$(\frac{a+b}{a} - \frac{2b}{a+b} )*(a+b)=$
$= \frac{(a+b)(a+b)}{a} -\frac{2b(a+b)}{a+b} =$
$= \frac{ a^{2} +2ab+ b^{2} }{a} -2b=$
$= \frac{ a^{2}+2ab+ b^{2} -2ab}{a} =$
$= \frac{ a^{2}+ b^{2} }{a} = \frac{ a^{2} }{a} + \frac{ b^{2} }{a} =a+ \frac{ b^{2} }{a}$

1 votes Thanks 1

andrisd Ошибка, сейчас исправлю.

andrisd Точнее была опечатка. Уже исправлено.

sedinalana 1)(a+b)/a-2b/(a+b)=(a²+2ab+b²-2ab)/a(a=b)=(a²+b²)/a(a=b)
2)(a²+b²)/a(a+b)*(a+b)=(a²+b²)/a

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