shehryar36
shehryar36 shehryar36
  • 24-06-2021
  • Mathematics
contestada

(m+n)^2 - (m-n)^2 = 16 then mn is​

Respuesta :

KurdishPotato
KurdishPotato KurdishPotato
  • 25-06-2021

Answer:

mn = 4

Step-by-step explanation:

(m+n)^2 = m^2 + 2mn + n^2

(m-n)^2 = m^2 - 2mn + n^2 multply the second equation by (-1) then subtract it from first equation

m^2 + 2mn + n^2 - m^2 + 2mn - n^2 = 16

4mn = 16 divide both sides by 4

mn = 4

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