✨ Best Answer ✨
(x + 1)² + (x + 3)(x - 3) - 4
= x² + 2x + 1 + x ² - 9 - 4
= 2x² + 2x - 12
= 2(x²+ x - 6)
= 2(x + 3)(x - 2) ⋯(答)
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