Mathematics
Senior High
(5)の二行目から３行目への式変形がどう変化しているのかわかりません。教えて下さい！
(a+b)(b+c)(c+a) + abc
(b+c){a²+(b+c)a+bc}+abc
= (b + c)a² + {(b+c)² + bc}a+(b + c)bc
=
= (a +(b + c)}{(b + c)a+bc}
(a+b+c)(ab+be+ca)
Answers
No answer yet
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
