3a^{5} b^{5} -24a^{2}c^{6}
8a^{3}+4a^{2}b-2ab^{2}-b^{3}
25 x^{2}-10xy+y^{2}-36
Погите.
8a^{3}+4a^{2}b-2ab^{2}-b^{3}
25 x^{2}-10xy+y^{2}-36
Погите.
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Answers & Comments
2) 8а^3+4а^2в-2ав^2-в^3=(8а^3-в^3)+
+(4а^2в-2ав^2)=(2а-в)(4а^2+2ав+в^2)+
+2ав(2а-в)=(2а-в)((4а^2+2ав+в^2+2ав)=
=(2а-в)(4а^2+4ав+в^2)=
=(2а-в)(2а+в)^2;
3) 25х^2-10ху+у^2-36=(5х-у)^2-36=
=(5х-у-6)(5х-у+6).