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Rimoooooochka
@Rimoooooochka
April 2021
1
13
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Сократите дробь:
а)a+b/a^2-b^2
в)a^2-1/ab-b
г)ab-3a/b^2-9
д)x^2-Y2/x^2+2xy+y^2
е) a^2-2ab+b^2/a^2-b^2
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Answers & Comments
Nick991
A) a+b/(a-b)(a+b)=1/a-b
в) a^2-1/b(a-1)=(a-1)(a+1)/b(a+1)=a-1/b
г)a(b-3)/(b-3)(b+3)=a/b+3
д) (x-y)(x+y)/(x+y)^2=x-y/x+y
e) (a-b)^2/(a-b)(a+b)=a-b/a+b
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Answers & Comments
в) a^2-1/b(a-1)=(a-1)(a+1)/b(a+1)=a-1/b
г)a(b-3)/(b-3)(b+3)=a/b+3
д) (x-y)(x+y)/(x+y)^2=x-y/x+y
e) (a-b)^2/(a-b)(a+b)=a-b/a+b