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> 化简:x-yx+3y÷x2-y2x2+6xy+9y2-2yx+y-数学
化简:x-yx+3y÷x2-y2x2+6xy+9y2-2yx+y-数学
题目简介
化简:x-yx+3y÷x2-y2x2+6xy+9y2-2yx+y-数学
题目详情
化简:
x-y
x+3y
÷
x
2
-
y
2
x
2
+6xy+9
y
2
-
2y
x+y
题型:解答题
难度:中档
来源:莱芜
答案
原式=
class="stub"x-y
x+3y
•
x
2
+6xy+9
y
2
x
2
-
y
2
-
class="stub"2y
x+y
=
class="stub"x-y
x+3y
•
(x+3y)
2
(x+y)(x-y)
-
class="stub"2y
x+y
=
class="stub"x+3y
x+y
-
class="stub"2y
x+y
=
class="stub"x+y
x+y
=1.
上一篇 :
=()。-九年级数学
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The bridges over the Fuyang
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题目简介
化简:x-yx+3y÷x2-y2x2+6xy+9y2-2yx+y-数学
题目详情
答案
=
=
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