约分(1)-4a^2bc^3/16abc^5 ,(2)2a^2(x-y)^3/a(y-x)(1)x^2-25/x^2-5x(2)a^2+4a+3/a^2+a-6(3)-32a^3b^2c/24a^2b^3d(4)-15(a+b)^2/-25(a+b)(5)a^2-ab/a-b(6)x^2-x-2/4-x^2

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约分(1)-4a^2bc^3/16abc^5,(2)2a^2(x-y)^3/a(y-x)(1)x^2-25/x^2-5x(2)a^2+4a+3/a^2+a-6(3)-32a^3b^2c/24a^2b^

约分(1)-4a^2bc^3/16abc^5 ,(2)2a^2(x-y)^3/a(y-x)(1)x^2-25/x^2-5x(2)a^2+4a+3/a^2+a-6(3)-32a^3b^2c/24a^2b^3d(4)-15(a+b)^2/-25(a+b)(5)a^2-ab/a-b(6)x^2-x-2/4-x^2
约分(1)-4a^2bc^3/16abc^5 ,(2)2a^2(x-y)^3/a(y-x)
(1)x^2-25/x^2-5x
(2)a^2+4a+3/a^2+a-6
(3)-32a^3b^2c/24a^2b^3d
(4)-15(a+b)^2/-25(a+b)
(5)a^2-ab/a-b
(6)x^2-x-2/4-x^2

约分(1)-4a^2bc^3/16abc^5 ,(2)2a^2(x-y)^3/a(y-x)(1)x^2-25/x^2-5x(2)a^2+4a+3/a^2+a-6(3)-32a^3b^2c/24a^2b^3d(4)-15(a+b)^2/-25(a+b)(5)a^2-ab/a-b(6)x^2-x-2/4-x^2
(1)-4a^2bc^3/16abc^5
=-a/4c²
(2)2a^2(x-y)^3/a(y-x)
=-2a(x-y)²
(1)x^2-25/x^2-5x
(2)a^2+4a+3/a^2+a-6=a²+5a-6
(3)-32a^3b^2c/24a^2b^3d
=-4ac/3bd
(4)-15(a+b)^2/-25(a+b)
=3(a+b)/5
(5)a^2-ab/a-b
=a²-2b
(6)x^2-x-2/4-x^2
=-x-1/2