Which quadratic equation is equivalent to (x + 2)2 +5(x + 2) – 6 = 0?
(u + 2)2 + 5(u + 2) – 6 = 0 where u = (x - 2)
u2 + 4 + 5u - 6 = 0 where u = (x - 2)
02 + 5u - 6 = 0 where u = (x + 2)
02 + -6 = 0 where u = (x + 2)

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