Tìm phân thức A biết A+3/x-2=2x+5/x^2-4
Giải thích
A+3x−2=4x+5x2−4 A=4x+5x2−4−3x−2 A=4x+5(x−2)(x+2)−3(x+2)(x−2)(x+2) A=4x+5−3x−6(x−2)(x+2) A=x−1(x−2)(x+2)
A+3x−2=4x+5x2−4 A=4x+5x2−4−3x−2 A=4x+5(x−2)(x+2)−3(x+2)(x−2)(x+2) A=4x+5−3x−6(x−2)(x+2) A=x−1(x−2)(x+2)