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> 计算与解方程:(1)x(2x-1)=3(2x-1);(2)239x+6x4-2x1x.-数学
计算与解方程:(1)x(2x-1)=3(2x-1);(2)239x+6x4-2x1x.-数学
题目简介
计算与解方程:(1)x(2x-1)=3(2x-1);(2)239x+6x4-2x1x.-数学
题目详情
计算与解方程:
(1)x(2x-1)=3(2x-1);
(2)
2
3
9x
+6
x
4
-2x
1
x
.
题型:解答题
难度:中档
来源:不详
答案
(1)∵x(2x-1)-3(2x-1)=0,
∴(2x-1)(x-3)=0,
∴2x-1=0或x-3=0,
∴x1=
class="stub"1
2
,x2=3;
(2)原式=
class="stub"2
3
×3
x
+6×
class="stub"1
2
x
-2x•
class="stub"1
x
x
=2
x
+3
x
-2
x
=3
x
.
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题目简介
计算与解方程:(1)x(2x-1)=3(2x-1);(2)239x+6x4-2x1x.-数学
题目详情
(1)x(2x-1)=3(2x-1);
(2)
答案
∴(2x-1)(x-3)=0,
∴2x-1=0或x-3=0,
∴x1=
(2)原式=
=2
=3