alexisss45 alexisss45
  • 01-10-2019
  • Mathematics
contestada

(x + y) (x - y)
if x=-4 and y = 1

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nadiroz
nadiroz nadiroz
  • 01-10-2019
• Difference of two squares = x² - y²

• Substitute x and y in equation

-> (-4)² - (1)²

-> 16 - 1

-> 15
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