ПОМОГИТЕ ПОЖАЛУЙСТА!!!!!!!!!!!!. Created by gfdghhdghfdf. algebra-ru

ПОМОГИТЕ ПОЖАЛУЙСТА!!!!!!!!!!!!...

naf52NAF 1. х²-13/х-√13=(х-√13)*(х+√13)/х-√13=х+√13
2. √х +2/х+4=√х +2/ (√х +2)*(√х -2)=1/√х -2
3. b-5√b/b-25 =√b(√b-5)/(√b-5)*(√b+5)=√b/√b+5

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olichka2407 (x^2-13)/(x-√13)=(x^2-(√13)^2)/(x-√13)=(x-√13)(x+√13)/(x-√13)=x+√13
(√x+2)/((√x)^2-4)=(√x+2)/(√x+2)(√x-2)=1/(√x-2)
(b-5√b)/(b-25)=((√b)^2-5√b)/((√b)^2-25)=√b(√b-5)/(√b-5)(√b+5)=√b/(√b+5)

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