help meeee (dễ mà :)) ) tìm x a,(x-1) (x+1) + (x-3) (x-5)=(2x+1)(x+1) b,(3x-2) (7x-5) - (4x+1) (5x - 2)=(3-x)(5-x)

help meeee (dễ mà :)) ) tìm x a,(x-1) (x+1) + (x-3) (x-5)=(2x+1)(x+1) b,(3x-2) (7x-5) - (4x+1) (5x - 2)=(3-x)(5-x)
Post Reply