What is a solution to (x + 6)(x + 2) = 60?

Expand the left side: (x + 6)(x + 2) = x² + 8x + 12. For x = 4, the expression is (4 + 6)(4 + 2) = 10 × 6 = 60, so x = 4 is a solution. The correct choice is C, x = 4.

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