(x2-x-3)(x2-x-5)-3因式分解过程=（x²-x）²-8(x²-x)+15-3=(x²-x)²-8(x²-x)+12=(x²-x-2)(x²-x-6)=(x-2)(x+1)(x-3)(x+2);您好,很高兴为您解答,skyhunter002为您答疑解惑如果...