nmeehleib
nmeehleib nmeehleib
  • 07-11-2016
  • Mathematics
contestada

factor 45x^2 - 20y^2.
please show your work.
thanks!

Respuesta :

milumil2000
milumil2000 milumil2000
  • 07-11-2016
45x² - 20y²=5(9x²-4y²)=5(3x+2y)(3x-2y)
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