若a+3b=0,则代数式(1-b/a+4b)÷(a²+6ab+96²/a²-9b²)的直为( ).若a+3b=0,则代数式(1-(b/a+4b))÷((a²+6ab+9b²)/(a²-9b²)的直为( )
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![若a+3b=0,则代数式(1-b/a+4b)÷(a²+6ab+96²/a²-9b²)的直为( ).若a+3b=0,则代数式(1-(b/a+4b))÷((a²+6ab+9b²)/(a²-9b²)的直为( )](/uploads/image/z/13871806-70-6.jpg?t=%E8%8B%A5a%2B3b%3D0%2C%E5%88%99%E4%BB%A3%E6%95%B0%E5%BC%8F%281-b%EF%BC%8Fa%2B4b%29%C3%B7%28a%26%23178%3B%2B6ab%2B96%26%23178%3B%EF%BC%8Fa%26%23178%3B-9b%26%23178%3B%29%E7%9A%84%E7%9B%B4%E4%B8%BA%EF%BC%88+%EF%BC%89.%E8%8B%A5a%2B3b%3D0%2C%E5%88%99%E4%BB%A3%E6%95%B0%E5%BC%8F%281-%EF%BC%88b%EF%BC%8Fa%2B4b%EF%BC%89%EF%BC%89%C3%B7%28%EF%BC%88a%26%23178%3B%2B6ab%2B9b%26%23178%3B%EF%BC%89%EF%BC%8F%EF%BC%88a%26%23178%3B-9b%26%23178%3B%29%E7%9A%84%E7%9B%B4%E4%B8%BA%EF%BC%88+%EF%BC%89)
若a+3b=0,则代数式(1-b/a+4b)÷(a²+6ab+96²/a²-9b²)的直为( ).若a+3b=0,则代数式(1-(b/a+4b))÷((a²+6ab+9b²)/(a²-9b²)的直为( )
若a+3b=0,则代数式(1-b/a+4b)÷(a²+6ab+96²/a²-9b²)的直为( ).
若a+3b=0,则代数式(1-(b/a+4b))÷((a²+6ab+9b²)/(a²-9b²)的直为( )
若a+3b=0,则代数式(1-b/a+4b)÷(a²+6ab+96²/a²-9b²)的直为( ).若a+3b=0,则代数式(1-(b/a+4b))÷((a²+6ab+9b²)/(a²-9b²)的直为( )
“÷”前面的式子通分得到(a+3b)/(a+4b)—(1)
“÷”后面的式子:分子:完全平方公式,分子:平方差公式,约分得到(a+3b)/(a-3b)—(2)
(1)/(2)得到:(a-3b)/(a+4b)—(3)
由于a+3b=0,所以a=-3b,将其带入(3)中,(-3b-3b)/(-3b+4b)=(-6b)/b=-6
上述问题的答案为-6
(1-B)/(0+B)÷(a+3b)^2+9180】/(a-3b)x0
答:此题分母为0无意义。