直接算就是了[(25/16)*x²-10x+16]÷[(x-16/5)²]=(25/16)[x²-10*(16/25)x+16*16/25]÷[(x-16/5)²]=(25/16)[x²-2*(16/5)x+(16/5)²]÷[(x-16/5)²]=(25/16)(x-16/5)²÷[(x-16/5...