3 years ago

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

Mathematics

1 answer:

nata0808 [166]3 years ago

6 0

Answer:

81 - x^2

Step-by-step 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

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