Tìm x:

a, 4x ( x - 5 ) - ( x -1 ) ( 4x + 3 ) = 5

b, ( x - 5 ) ( x - 4 ) ( x + 1 ) ( x + 2 ) = 7

c, 2x ( x - 3 ) - 2 ( \(x^2\)- 4 ) = 4

d, ( x - 2 ) ( x + 2 ) = 5

e, ( x +1 )\(^2\) - \(x^2\) = 3

f, ( 2x - 3 )\(^2\) - 4x\(^2\) + 2 = 0

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