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What is the value of c^2-d^2 if c+d=7 and c-d=-2?
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What is the value of c^2-d^2 if c+d=7 and c-d=-2?

User Kristin
by
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1 Answer

4 votes

Answer:

- 14

Explanation:

c² - d² ← is a difference of squares and factors as

= (c + d)(c - d) ← substitute values for factors

= 7 × - 2

= - 14

User MswatiLomnyama
by
4.1k points
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