(1)4a²b/3cd²×5c²d/4ab²÷2ab/3d(2)81-a²/a²+6a+9÷a-9/2a+6×a+3/a-9(3)(-a/b)²÷(2a²/5b)²×a/5b
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/23 16:44:06
![(1)4a²b/3cd²×5c²d/4ab²÷2ab/3d(2)81-a²/a²+6a+9÷a-9/2a+6×a+3/a-9(3)(-a/b)²÷(2a²/5b)²×a/5b](/uploads/image/z/1806691-67-1.jpg?t=%281%294a%26%23178%3Bb%2F3cd%26%23178%3B%C3%975c%26%23178%3Bd%2F4ab%26%23178%3B%C3%B72ab%2F3d%282%2981-a%26%23178%3B%2Fa%26%23178%3B%2B6a%2B9%C3%B7a-9%2F2a%2B6%C3%97a%2B3%2Fa-9%283%29%28-a%2Fb%29%26%23178%3B%C3%B7%282a%26%23178%3B%2F5b%29%26%23178%3B%C3%97a%2F5b)
(1)4a²b/3cd²×5c²d/4ab²÷2ab/3d(2)81-a²/a²+6a+9÷a-9/2a+6×a+3/a-9(3)(-a/b)²÷(2a²/5b)²×a/5b
(1)4a²b/3cd²×5c²d/4ab²÷2ab/3d
(2)81-a²/a²+6a+9÷a-9/2a+6×a+3/a-9
(3)(-a/b)²÷(2a²/5b)²×a/5b
(1)4a²b/3cd²×5c²d/4ab²÷2ab/3d(2)81-a²/a²+6a+9÷a-9/2a+6×a+3/a-9(3)(-a/b)²÷(2a²/5b)²×a/5b
(1)4a²b/3cd²×5c²d/4ab²÷2ab/3d
=5c/2b²
(2)81-a²/a²+6a+9÷a-9/2a+6×a+3/a-9
=-2(a+9)/(a-9)
(3)(-a/b)²÷(2a²/5b)²×a/5b
=5/4ab