jamesqw777 jamesqw777
  • 16-12-2019
  • Mathematics
contestada

Factor this expression completely. x^2 - r^2

Respuesta :

SvetkaChem
SvetkaChem SvetkaChem
  • 16-12-2019

Answer:

x² - r² = (x-r)(x+r)

Step-by-step explanation:

x² - r² = (x-r)(x+r) = x²+xr - xr - r² = x² - r²

or

x² - r²= x² + xr - xr -r²= x(x+r) - r(x+r) = (x+r)(x-r)

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