问题 填空题
化简:
y2
6x
÷
y2
12x
=______;
x2-3x
x-3
=______.
答案

y2
6x
÷
y2
12x

=

y2
6x
×
12x
y2

=2;

x2-3x
x-3

=

x(x-3)
x-3

=x.

故答案为:2,x.

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