问题
解答题
化简:(1)(12a3b2-8a2b3)÷4ab (2)
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答案
(1)原式=12a3b2÷4ab-8a2b3÷4ab=3a2b-2ab2;
(2)原式=
•a(a-2) a+4
=(a+4)2 4a(a-2)
.a+4 4
化简:(1)(12a3b2-8a2b3)÷4ab (2)
|
(1)原式=12a3b2÷4ab-8a2b3÷4ab=3a2b-2ab2;
(2)原式=
•a(a-2) a+4
=(a+4)2 4a(a-2)
.a+4 4