Step-by-step explanation:
A = L×W
A = (x + 4)(x - 4)
A = x² + 4x - 4x - 16
A = x² - 16
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Step-by-step explanation:
A = L×W
A = (x + 4)(x - 4)
A = x² + 4x - 4x - 16
A = x² - 16