Question

С^2/с2-4 - с/с-2 упростить

Answer 1

= ( С^2 - C*( C + 2 )) / ( C^2 - 4 ) =
= ( C^2 - C^2 - 2C ) / (C^2 - 4 ) =
= ( - 2C ) / ( C^2 - 4 )