因式分解:[(b-5a)^2-4(5a-b)]/(5a-b-4)还有[x(x^2y^2-xy)-y(x^2-x^3y)]/(3x^2y)
问题描述:
因式分解:[(b-5a)^2-4(5a-b)]/(5a-b-4)
还有[x(x^2y^2-xy)-y(x^2-x^3y)]/(3x^2y)
答
[(b-5a)^2-4(5a-b)]/(5a-b-4)
=[5a-b-4]/(5a-b-4)
=1
答
[(b-5a)^2-4(5a-b)]/(5a-b-4)
=[(5a-b)^2-4(5a-b)]/(5a-b-4)
=(5a-b)(5a-b-4)/(5a-b-4)
=5a-b