Solve (x + 3) ^2 + (x + 3) - 2 = 0.

Let u = x+3

Rewrite the equation in terms of u.

A. u^2 + u - 2 = 0

B. (u^2 + 9) + u - 2 = 0

C. u^2 + u + 1 = 0

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