giúp mình vs ạ?
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Bài 4: Giải các phương trình sau:

1) \( (x + 2)(x - 1) = 0 \)
2) \( (x + 2)(x - 3) = 0 \)
3) \( (x - 1)(3x - 6) = 0 \)
4) \( (x + 1)^2 (x + 2) = 0 \)
5) \( (6 - x)(x + 6)^2 = 0 \)
6) \( (5 - x)^2 (3x - 1) = 0 \)
7) \( -3x^2 - 6x = 0 \)
8) \( -6x + 9x^2 = 0 \)
9) \( 4x(x - 3) - 3x + 9 = 0 \)
10) \( 2x(x - 3) = -x - 3 \)
11) \( (1 + x)^2 - (1 - x)(3 - 2x) = 0 \)
12) \( x(x - 4) - 3x + 12 = 0 \)
13) \( (1 + x)^2 - (1 - x)^2 = 0 \)
14) \( (3x + 1)^2 - (2x + 3) = 0 \)
15) \( (5x - 4) - (3 - x)^2 = 0 \)
16) \( (2x + 7) = (1 - x)(3 + 5) \)
17) \( (x - 3)^2 = (3x - 2)^2 \)
18) \( (2 - x)(x + 1) = -(x - 2)(3x + 5) \)
19) \( (x - 1)(x + 7) = (1 - x)(3 - 2x) \)
20) \( (2 - x)(x + 1) = -(x - 2)(3x + 5) \)