計算:(1)x+2y+(4y^2/x-2y)(2)(x/x^2-1)除以(x^2+4x+3)/(x^2+2x+1)(3)12/(m^2-9)加上2/(3-m) x+2y+4y^2/(x-2y)第一小題

計算:(1)x+2y+(4y^2/x-2y)(2)(x/x^2-1)除以(x^2+4x+3)/(x^2+2x+1)(3)12/(m^2-9)加上2/(3-m) x+2y+4y^2/(x-2y)第一小題

(1):(x+2y)+4y²;/(x-2y)=[(x+2y)(x-2y)+4y²;]/(x-2y)=x²;/(x-2y)(2):(x²;+4x+3)/(x²;+2x+1)=[(x+1)(x+3)]/(x+1)²;=(x+3)/(x+1),所以原式=x/(x²;-1)/[(x+3)/(x+1)](我想你應該是…