(4a-b²)x(-2b)
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(4a-b²)x(-2b)
(4a-b²)x(-2b)
(4a-b²)x(-2b)
是整合吗?
=-8ab+2b³
=2b³ -8ab
2b(b²-4a)
原式=-8ab+2b³
(4a-b²)x(-2b)
(4a-b²)x(-2b)
(4a-b²)x(-2b)
是整合吗?
=-8ab+2b³
=2b³ -8ab
2b(b²-4a)
原式=-8ab+2b³