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здесь только первое задание остальные не успеваю)))
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1)
![frac{-x^2*x}{x}=-x^{2} \ frac{x(y+5)(y-1)}{x*x(y-1)}= frac{y+5}{x} frac{-x^2*x}{x}=-x^{2} \ frac{x(y+5)(y-1)}{x*x(y-1)}= frac{y+5}{x}](https://tex.z-dn.net/?f=frac%7B-x%5E2%2Ax%7D%7Bx%7D%3D-x%5E%7B2%7D+%5C++frac%7Bx%28y%2B5%29%28y-1%29%7D%7Bx%2Ax%28y-1%29%7D%3D+frac%7By%2B5%7D%7Bx%7D+++)
2)
![frac{3(a^{2}-2ab+b^{2})}{4(a-b)(a+b)}= frac{3(a-b)^{2}}{4(a-b)(a+b)}= frac{3(a-b)}{4(a+b)} \ frac{3(a-b)}{4(a+b)}= frac{3(2-1)}{4(2+1)}= frac{3}{4*3}= frac{1}{4} frac{3(a^{2}-2ab+b^{2})}{4(a-b)(a+b)}= frac{3(a-b)^{2}}{4(a-b)(a+b)}= frac{3(a-b)}{4(a+b)} \ frac{3(a-b)}{4(a+b)}= frac{3(2-1)}{4(2+1)}= frac{3}{4*3}= frac{1}{4}](https://tex.z-dn.net/?f=+frac%7B3%28a%5E%7B2%7D-2ab%2Bb%5E%7B2%7D%29%7D%7B4%28a-b%29%28a%2Bb%29%7D%3D+frac%7B3%28a-b%29%5E%7B2%7D%7D%7B4%28a-b%29%28a%2Bb%29%7D%3D+frac%7B3%28a-b%29%7D%7B4%28a%2Bb%29%7D+%5C+frac%7B3%28a-b%29%7D%7B4%28a%2Bb%29%7D%3D+frac%7B3%282-1%29%7D%7B4%282%2B1%29%7D%3D+frac%7B3%7D%7B4%2A3%7D%3D+frac%7B1%7D%7B4%7D++++++)
3)
![frac{8a^{2}bc(4b^{2}+2-3ab)}{8a*a(4b^{2}+2-3ab)}=bc frac{8a^{2}bc(4b^{2}+2-3ab)}{8a*a(4b^{2}+2-3ab)}=bc](https://tex.z-dn.net/?f=+frac%7B8a%5E%7B2%7Dbc%284b%5E%7B2%7D%2B2-3ab%29%7D%7B8a%2Aa%284b%5E%7B2%7D%2B2-3ab%29%7D%3Dbc+)
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