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20 votes
20 votes
(b+3)(b+7) FOIL method

User MuraliKrishna
by
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2 Answers

20 votes
20 votes
(b+3)(b+7)

b^2+10b+21
User Ward Segers
by
3.1k points
25 votes
25 votes

Explanation:

(b + 3)(b + 7) = ...

= b² + (3 + 7)b + (3•7)

= b² + 10b + 21

User Inetknght
by
3.2k points
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