Tính
----- Nội dung dịch tự động từ ảnh -----
```
25) \(\left(2x+\frac{3}{5}\right)\left(\frac{3}{5}-2x\right)\)
26) \(\left(\frac{1}{2}-\frac{4}{3}\right)\left(\frac{4}{3}+\frac{1}{2}x\right)\)
27) \(\left(\frac{2}{3}x^2-\frac{y}{2}\right)\left(\frac{2}{3}x^2+\frac{y}{2}\right)\)
28) \((3x-y^2)(3x+y^2)\)
29) \((x^2-2y)(x^2+2y)\)
30) \((x^2-y^2)(x^2+y^2)\)
Bài 3: Rút gọn biểu thức sau:
1) \((3x+1)^2-(2x-1)^2\)
2) \((x+1)^2-(x-1)^2\)
3) \((y+2x)^2-(y-3x)^2\)
```
```
25) \(\left(2x+\frac{3}{5}\right)\left(\frac{3}{5}-2x\right)\)
26) \(\left(\frac{1}{2}-\frac{4}{3}\right)\left(\frac{4}{3}+\frac{1}{2}x\right)\)
27) \(\left(\frac{2}{3}x^2-\frac{y}{2}\right)\left(\frac{2}{3}x^2+\frac{y}{2}\right)\)
28) \((3x-y^2)(3x+y^2)\)
29) \((x^2-2y)(x^2+2y)\)
30) \((x^2-y^2)(x^2+y^2)\)
Bài 3: Rút gọn biểu thức sau:
1) \((3x+1)^2-(2x-1)^2\)
2) \((x+1)^2-(x-1)^2\)
3) \((y+2x)^2-(y-3x)^2\)
```