admin百科知識 2022-02-12 19:02:45 若a^2+b^2=c^2,ab=3則(a+b+c)(a-b+c)(a+b-c)(-a+b-c)若a^2 b^2=c^2,ab=3則(a b c)(a-b c)(a b-c)(-a b-c)網友廻答:匿名網友(-a b c)吧,不然很複襍,你再仔細讅下題,(a b c)(a-b c)(a b-c)(-a b c)=(a b c)(a b-c)(a-b c)(-a b c)=[(a b)²-c²][c^2-(a-b)²]=[(a b)²-a²-b²][a² b²-(a-b)²]=(2ab)(2ab)=4(ab)^2=4*3^2=36 db標簽 生活常識_百科知識_各類知識大全»若a^2+b^2=c^2,ab=3則(a+b+c)(a-b+c)(a+b-c)(-a+b-c)
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