Solve the following equation by factorisation:
(x + 1)(2x + 8) = (x + 7)(x + 3)
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(2x - 3)2 = 49
4(2x - 3)2 - (2x - 3) - 14 = 0
2x2 - 9x + 10 = 0, when :
(i) x ∈ N
(ii) x ∈ Q.