【分解因式,需要过程】2x³-8x²+8x 7x²-63 a³-a 3a²-3b² x²-4y²

2x³-8x²+8x=2x(x²-4x+4)=2x(x-2)²7x²-63=7(x²-9)=7(x+3)(x-3)a³-a=a(a²-1)=a(a+1)(a-1)3a²-3b²=3(a²-b²)=3(a+b)(a-b)x²-4y²=(x+2y)(x-2y)x&...