	Thái Mạnh Hà \| Chat Online
	08/02 21:52:06
	Toán học - Lớp 8 \| Toán học \| Lớp 8

Bài 3: Thực hiện phép tính (quy đồng) 1) \(\frac{1}{y(x-y)} - \frac{1}{x(x-y)}\) 2) \(\frac{2x + 6}{x + 3}\) 3) \(\frac{x}{5x + 5} \div \frac{10x - 10}{1}\) 4) \(\frac{1}{xy - x^2} - \frac{1}{-xy}\) 5) \(\frac{x + 6}{2x + 3}\) 6) \(\frac{x}{y} \div \frac{y}{y^2 - x^2}\) 7) \(\frac{x + 3}{x^2 - 2x}\) 8) \(\frac{x + 9}{6}\) 9) \(\frac{-12 + 6}{6x - 36}\) 10) \(3 - \frac{5}{2x - 6}\) 11) \(\frac{7}{x^2 + 3} - \frac{36}{x^2 + 6x}\) 12) \(\frac{y^2 - xy}{2xy - 2y^2}\) 13) \(\frac{1}{x-5} - \frac{1}{2 - 2x^2}\) 14) \(\frac{x+1}{3-x}\) 15) \(\frac{2}{x^2 - 2x}\) 16) \(\frac{3}{2x - 3} - \frac{2x^2 + 1}{4x - 2}\) 17) \(\frac{x + 6}{x + 3}\) 18) \(\frac{2}{x^2 - 5x + 6}\) 19) \(\frac{x^2 - 4}{x - 2}\) 20) \(\frac{x^2 - 2x}{x^2 - 9}\) 21) \(\frac{x + 1}{x + 3} - \frac{2x - 2}{x^2 - 9}\)

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Thực hiện phép tính (quy đồng)**
1) \(\frac{1}{y(x-y)} - \frac{1}{x(x-y)}\)
2) \(\frac{2x + 6}{x + 3}\)
3) \(\frac{x}{5x + 5} \div \frac{10x - 10}{1}\)
4) \(\frac{1}{xy - x^2} - \frac{1}{-xy}\)
5) \(\frac{x + 6}{2x + 3}\)
6) \(\frac{x}{y} \div \frac{y}{y^2 - x^2}\)
7) \(\frac{x + 3}{x^2 - 2x}\)
8) \(\frac{x + 9}{6}\)
9) \(\frac{-12 + 6}{6x - 36}\)
10) \(3 - \frac{5}{2x - 6}\)
11) \(\frac{7}{x^2 + 3} - \frac{36}{x^2 + 6x}\)
12) \(\frac{y^2 - xy}{2xy - 2y^2}\)
13) \(\frac{1}{x-5} - \frac{1}{2 - 2x^2}\)
14) \(\frac{x+1}{3-x}\)
15) \(\frac{2}{x^2 - 2x}\)
16) \(\frac{3}{2x - 3} - \frac{2x^2 + 1}{4x - 2}\)
17) \(\frac{x + 6}{x + 3}\)
18) \(\frac{2}{x^2 - 5x + 6}\)
19) \(\frac{x^2 - 4}{x - 2}\)
20) \(\frac{x^2 - 2x}{x^2 - 9}\)
21) \(\frac{x + 1}{x + 3} - \frac{2x - 2}{x^2 - 9}\)