题文
(1)计算:(﹣4a2b4c)÷(
a2b3)•2ab2
(2)计算:
(3)先化简,再求值:[(xy+2)(xy﹣2)﹣2x2y2+4]÷(xy),其中x=10,
.
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(1)计算:(﹣4a2b4c)÷(
a2b3)•2ab2
(2)计算:
(3)先化简,再求值:[(xy+2)(xy﹣2)﹣2x2y2+4]÷(xy),其中x=10,
.
试题篮
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