Multiple choice

What is (n - 7) (n + 11) in expanded form?

  1. n2 + 4n - 77

  2. n2 - 4n - 77

  3. n2 - 4n + 77

  4. n2 - 18 - 77
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A Correct answer
Explanation

(n - 7) (n + 11) = n2 + 11n - 7n - 77 (Using Foil) = n2 + 4n - 77

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