问题
解答题
已知2x-3=0，求代数式
|
答案
+x(4x-3) x2-9
÷6 x2-9 2 x-3
=
+4x2-3x x2-9
•6 x2-9 x-3 2
=
+4x2-3x x2-9 3 x+3
=4x2-9 x2-9
=
，(2x+3)(2x-3) x2-9
∵2x-3=0，
∴原式=0．
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已知2x-3=0，求代数式
|
+x(4x-3) x2-9
÷6 x2-9 2 x-3
=
+4x2-3x x2-9
•6 x2-9 x-3 2
=
+4x2-3x x2-9 3 x+3
=4x2-9 x2-9
=
，(2x+3)(2x-3) x2-9
∵2x-3=0，
∴原式=0．