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What is the solution for x in the equation x2 + 6x = 9?

  1. x = 3

  2. x = -3

  3. x = -1

  4. x = 9

The correct answer is: x = -3

Option A is incorrect because it only addresses part of the equation, x2 + 6x, and does not account for the constant term of 9. Option C is incorrect because it does not account for the positive coefficient of x, 6, and only takes into account the negative constant term. Option D is incorrect because it does not account for the exponent of x in the quadratic equation. The correct answer is B because it satisfies all parts of the equation by combining the integer values of 3 and -3 to solve for x.