The correct answer is: [D]: " 4xy + 16x − 4y² − 16y " .
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Explanation:
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Given:
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" (2x − 2y) (2y + 8) " ; Simplify .
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We starting by "expanding" the expression.
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Note: " (a + b)(c + d) = ac + ad + bc + bd " ;
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→ (2x * 2y) + (2x * 8) + (-2y * 2y) + (-2y * 8) ;
= 4xy + 16x + (- 4y² ) + (-16y) ;
= 4xy + 16x − 4y² − 16y ;
→ which is: "Answer choice: [D]: " 4xy + 16x − 4y² − 16y " .
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