S Sam New member Jun 16, 2009 #2 3x/(x+y) + 4y/(x-y) => { 3x(x-y) + 4y(x+y) }/(x+y)(x-y) => { 3x^2 - 3xy + 4xy +4y^2}/(x^2 - y^2) => { 3x^2 +4y^2 +xy}/(x^2 - y^2)
3x/(x+y) + 4y/(x-y) => { 3x(x-y) + 4y(x+y) }/(x+y)(x-y) => { 3x^2 - 3xy + 4xy +4y^2}/(x^2 - y^2) => { 3x^2 +4y^2 +xy}/(x^2 - y^2)
