问题
解答题
(
|
答案
(
x-3)2-(1 3
x-3)(1 2
x+3)1 2
=(
x2-2x+9)-(1 9
x2-9)(2分)1 4
=
x2-2x+9-1 9
x2+9(1分)1 4
=-
x2-2x+18.(1分)5 36
(
|
(
x-3)2-(1 3
x-3)(1 2
x+3)1 2
=(
x2-2x+9)-(1 9
x2-9)(2分)1 4
=
x2-2x+9-1 9
x2+9(1分)1 4
=-
x2-2x+18.(1分)5 36