[tex]\frac{c^{2}-(a^{2}-2ab+b^{2}) }{a^{2}+2ac+c^{2}-b^{2} }= \frac{c^{2}-(a-b)^2 }{(a+c)^2 -b^{2} }=\frac{(c-a+b)(c+a-b)}{(a+c-b)(a+c+b)}=\frac{c-a+b}{a+b+c}[/tex]
Объяснение:
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[tex]\frac{c^{2}-(a^{2}-2ab+b^{2}) }{a^{2}+2ac+c^{2}-b^{2} }= \frac{c^{2}-(a-b)^2 }{(a+c)^2 -b^{2} }=\frac{(c-a+b)(c+a-b)}{(a+c-b)(a+c+b)}=\frac{c-a+b}{a+b+c}[/tex]
Объяснение: