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> 不改变分式的值,使下列分式的分子和分母都不含“-”号:①-3b2a②5y-7x2③-a-2b2a+b.-数学
不改变分式的值,使下列分式的分子和分母都不含“-”号:①-3b2a②5y-7x2③-a-2b2a+b.-数学
题目简介
不改变分式的值,使下列分式的分子和分母都不含“-”号:①-3b2a②5y-7x2③-a-2b2a+b.-数学
题目详情
不改变分式的值,使下列分式的分子和分母都不含“-”号:
①
-3b
2a
②
5y
-7x
2
③
-a-2b
2a+b
.
题型:解答题
难度:中档
来源:不详
答案
①原式=-
class="stub"3b
2a
;
②原式=-
class="stub"5y
7x
2
;
③原式=-
class="stub"a+2b
2a+b
.
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题目简介
不改变分式的值,使下列分式的分子和分母都不含“-”号:①-3b2a②5y-7x2③-a-2b2a+b.-数学
题目详情
①
②
③
答案
②原式=-
③原式=-