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3 votes
Please expand it
(c-7d)2

User Nullspace
by
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1 Answer

1 vote

Answer:

c² - 14cd + 49d²

Explanation:

Given

(c - 7d)²

= (c - 7d)(c - 7d)

Each term in the second factor is multiplied by each term in the first factor, that is

c(c - 7d) - 7d(c - 7d) ← distribute both parenthesis

= c² - 7cd - 7cd + 49d² ← collect like terms

= c² - 14cd + 49d²

User Yellos
by
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