Giai phương trình

a)   (3x + 2)(x2 – 1) = (9x2 – 4)(x + 1)            b)   x(x + 3)(x – 3) – (x + 2)(x2 – 2x + 4) = 0

c)   2x(x – 3) + 5(x – 3) = 0                      d)   (3x – 1)(x2 + 2) = (3x – 1)(7x – 10)

e)   (x + 2)(3 – 4x) = x2 + 4x + 4              f)   x(2x – 7) – 4x + 14 = 0

g)   3x – 15 = 2x(x – 5)                             h)      (2x + 1)(3x – 2) = (5x – 8)(2x + 1)

i)    0,5x(x – 3) = (x – 3)(1,5x – 1)            j)    (2x2 + 1)(4x – 3) = (x – 12)(2x2 + 1)    

k)   x(2x – 9) = 3x(x – 5)                           l)    (x – 1)(5x + 3) = (3x – 8)(x – 1)

m)  2x(x – 1) = x2 - 1                                 n)   (2 – 3x)(x + 11) = (3x – 2)(2 – 5x)       

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s)   (x + 2)(x – 3)(17x2 – 17x + 8) = (x + 2)(x – 3)(x2 – 17x +33)