asghartab6
asghartab6 asghartab6
  • 13-11-2020
  • Mathematics
contestada

2) If x+y=6 and xy=5 find x-y?​

Respuesta :

mhanifa
mhanifa mhanifa
  • 13-11-2020

Answer:

  • x - y = ± 4

Step-by-step explanation:

Given

  • x + y = 6 and xy = 5

To find

  • x - y

Solution

  • (x - y)² = (x + y)² - 4xy = 6² - 4*5 = 36 - 20 = 16 = 4²
  • (x - y)² = 4²
  • x - y = ± 4
Answer Link

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