miranda160463 miranda160463
  • 03-06-2020
  • Mathematics
contestada

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

Respuesta :

altavistard
altavistard altavistard
  • 05-06-2020

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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