Simplify: (n - 3)(n + 7) a n^2 + 4n - 21 b n^2 - 4n + 21 c n^2 + 4n - 12 d n^2 - 4n - 12
(n - 3)(n + 7) = n^2 + 7n - 3n - 21 = n^2 + 4n - 21
s
Question
Updated 3/28/2018 5:56:55 AM
Edited by Masamune [3/28/2018 5:56:54 AM]
Rating
3
(n - 3)(n + 7)
= n^2 + 7n - 3n - 21
= n^2 + 4n - 21

Questions asked by the same visitor
Evaluate the polynomial for x = -2, and y = 4. 3y2 + 7x - 8 a 22 b 24 c 25 d 26
Question
Updated 6/9/2014 1:16:07 PM
3y^2 + 7x - 8, x = -2 and y = 4;

3(4)^2 + 7(-2) - 8

= 3(16) - 14 - 8

= 48 - 14 - 8

= 26
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Question
Updated 5/9/2015 11:21:05 PM
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The Love Canal was originally built to provide nuclear power for Niagara Falls, New York. This is false.

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