2( x +2) * 2 - ( x - 2)(x+2) = (2x + 4) * 2 - x² - 4 = 4x + 8 - x² - 4 = 4x + 4 - x² = 4* (-2) + 4 - (-2)² = -8 + 4 - 4 = - 8
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2( x +2) * 2 - ( x - 2)(x+2) = (2x + 4) * 2 - x² - 4 = 4x + 8 - x² - 4 = 4x + 4 - x² = 4* (-2) + 4 - (-2)² = -8 + 4 - 4 = - 8