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Multiply and simplify (7ab+3c)(7ab-3c)
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5 votes
Multiply and simplify (7ab+3c)(7ab-3c)

User Zizzencs
by
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2 Answers

2 votes

Answer: 49a²b² - 9c²

Explanation:

We will apply the difference of two squares formula:

(7ab+3c)(7ab-3c)

(7ab)² - (3c)²

49a²b² - 9c²

User Lubos Jerabek
by
7.0k points
3 votes

Answer:

49a²b² - 9c²

Explanation:

(7ab+3c)(7ab-3c)

= 49a²b² - 21abc + 21abc - 9c²

= 49a²b² - 9c²

So, the answer is 49a²b² - 9c²

User Bstakes
by
7.3k points
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