Автор - ainyrtaken

сократите алгкбраическую дробь ​

Ответ

Автор - maymr

1) =-frac{a(2y-x)}{b(2y-x)}=-frac{a}{b}

2) =frac{3(a-12)}{b(12-a)}=-frac{3(12-a)}{b(12-a)}=-frac{3}{b}

3) =frac{(5-a)(5+a)}{3(a-5)}=-frac{(5-a)(5+a)}{3(5-a)}=-frac{5+a}{3}

4) =frac{8(b-a)(b+a)}{(a-b)^2}=-frac{8(-(a-b))(b+a)}{(a-2)^2}=-frac{8b+8a}{a-b}

5) =-frac{5x(y-x)}{x^3(y-x)}=-frac{5x}{x^3}=-frac{5}{x^2}

6) =frac{7b(1-2b)}{21b(2b-1)}=-frac{7b(2b-1)}{21b(2b-1)}=-frac{7b}{21b}=-frac{1}{3}

7) =frac{3(1-x)}{(x-1)^2}=-frac{3(x-1)}{(x-1)^2}=-frac{3}{x-1}

8) =frac{(b-2)^3}{(-(b-2))^2}=b-2

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