Thực hiện phép tính (quy đồng)
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Bài 4: Thực hiện phép tính (quy đồng)
1) \(\frac{2}{x+3} + \frac{x}{3-x} - \frac{x^2}{x^2-9}\)
2) \(\frac{1}{x-2} + \frac{1}{x+2} - \frac{4x-4}{x^2-4}\)
3) \(\frac{2}{x-2} + \frac{3}{x+2} - \frac{18-5x}{x^2-4}\)
4) \(\frac{x+1}{x+3} - \frac{x-1}{3-x} - \frac{2x^2}{x^2-9}\)
5) \(\frac{4}{x+2} + \frac{3}{x-2} - \frac{12}{x^2-4}\)
6) \(\frac{4}{x+2} - \frac{5x-6}{4-x^2}\)
7) \(\frac{x^2}{x^2-1} + \frac{x+2}{2-x}\)
8) \(\frac{a^2}{a+1} + \frac{2a}{a-1} - \frac{a^2-1}{a^2-1}\)
9) \(\frac{1}{x+2} - \frac{2-x}{x-4}\)
10) \(\frac{x+1}{x-3} - \frac{1-x}{9-x^2}\)
11) \(\frac{1}{x-y} + \frac{2}{3x}\)
12) \(\frac{x}{x+y} + \frac{y}{x-y} - \frac{2xy}{y^2-x^2}\)
Bài 4: Thực hiện phép tính (quy đồng)
1) \(\frac{2}{x+3} + \frac{x}{3-x} - \frac{x^2}{x^2-9}\)
2) \(\frac{1}{x-2} + \frac{1}{x+2} - \frac{4x-4}{x^2-4}\)
3) \(\frac{2}{x-2} + \frac{3}{x+2} - \frac{18-5x}{x^2-4}\)
4) \(\frac{x+1}{x+3} - \frac{x-1}{3-x} - \frac{2x^2}{x^2-9}\)
5) \(\frac{4}{x+2} + \frac{3}{x-2} - \frac{12}{x^2-4}\)
6) \(\frac{4}{x+2} - \frac{5x-6}{4-x^2}\)
7) \(\frac{x^2}{x^2-1} + \frac{x+2}{2-x}\)
8) \(\frac{a^2}{a+1} + \frac{2a}{a-1} - \frac{a^2-1}{a^2-1}\)
9) \(\frac{1}{x+2} - \frac{2-x}{x-4}\)
10) \(\frac{x+1}{x-3} - \frac{1-x}{9-x^2}\)
11) \(\frac{1}{x-y} + \frac{2}{3x}\)
12) \(\frac{x}{x+y} + \frac{y}{x-y} - \frac{2xy}{y^2-x^2}\)