a4次方+b4次方+c4次方-2倍a方b方-2倍b方c方-2倍a方c方 分解因式
人气：118 ℃ 时间：2020-03-29 15:17:01
解答
a^4+b^4+c^4+2a²b²-2b²c²-2a²c²-4a²b²=(a^4+b^4+2a²b²)+c^4-2a²c²-2b²c²-4a²b²=(a²+b²)²+(c²)²-2c&sup...
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