通分(1)6c/a²b与c/3ab² (2)x - y/2x+3y与xy/(x+y)²(3)2mn/4m²— 9与4m²n+6m/8m²—27急
来源:学生作业帮助网 编辑:六六作业网 时间:2024/09/04 21:38:23
通分(1)6c/a²b与c/3ab²(2)x-y/2x+3y与xy/(x+y)²(3)2mn/4m²—9与4m²n+6m/8m²—27急通分
通分(1)6c/a²b与c/3ab² (2)x - y/2x+3y与xy/(x+y)²(3)2mn/4m²— 9与4m²n+6m/8m²—27急
通分(1)6c/a²b与c/3ab² (2)x - y/2x+3y与xy/(x+y)²
(3)2mn/4m²— 9与4m²n+6m/8m²—27
急
通分(1)6c/a²b与c/3ab² (2)x - y/2x+3y与xy/(x+y)²(3)2mn/4m²— 9与4m²n+6m/8m²—27急
(1)
6c/a²b=18bc/a²b²
c/3ab² =ac/3a²b²
(2)
x - y/2x+3y=(x-y)(x+y)²/(2x+3y)(x+y)²
xy/(x+y)²=xy(2x+3y)/(2x+3y)(x+y)²
(3)
2mn/4m²— 9=2mn(8m²-27)/(4m²-9)(8m²-27)
4m²n+6m/8m²—27=(4m²n+6m)(4m²-9)/(4m²-9)(8m²-27)
不要急,请核对你第二、三题的二个分母,我怀疑有错