1、2a^2b^2-8abx+8x^2 =2(a^2b^2-4abx+(2x)^2) =2(ab+2x)^22、(m^2-1)^2-6(m^2-1)+9=(m^2-1-3)^2 =((m+2(m-2))^23、(a^2+b^2)^2-4a^2b^2= a^4+2a^2b^2+b^4-4a^2b^2 = (a^2-b^2)^2 ((a+b)(...