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What is the product of (9+x)(9-x)
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What is the product of (9+x)(9-x)

User Arocketman
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1 Answer

3 votes

Answer:

81 - x^2

Explanation:

this is a "special product," namely, the product of the sum and the difference of quantities 9 and x.

The product is the difference of two squares:

(9 + x)(9 - x) = 81 - x^2

User Line
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