因式分解：x-xy^2=_____,169x^2y^2-1=____.ab^3-a^3b=____,(x-y)^2-1=______数学解答

因式分解：x-xy^2=_____,169x^2y^2-1=____.ab^3-a^3b=____,(x-y)^2-1=_____.x^3-16x^2+64x=______,2x^2-4x
+2y^2=______.25(x-y)^2-10(x-y)+1=______

人气：410 ℃　时间：2020-05-19 15:55:18

解答

x-xy^2=x(1+y)(1-y)169x^2y^2-1=(13xy+1)(13xy-1)ab^3-a^3b=ab(b+a)(b-a)(x-y)^2-1=(x-y+1)(x-y-1)x^3-16x^2+64x=x(x^2-16x+64)=x(x-8)^22x^2-4xy+2y^2=2(x^2-2xy+y^2)=2(x-y)^225(x-y)^2-10(x-y)+1=[5(x-y)-1]^2=(5...