Mathematics
Senior High
Resolved
なぜ下線部の式から、次の行の式のように変形できるのですか。
(2) a²b+ab²+a+b-ab-1
=ba²+(b²-b+1)a+b−1
=(a+b-1)(ba+1)
=(a+b-1)(ab+1)
1 X0-1
b
b
練習 次の式を因数分解せよ。
(3) 18 (1)
b-1
a²b+ab²+a+b-ab-1=ab(a+b)+a+b-
b²
=(a+b)(ab+1)—
=(a+b−1)(ab+1
ab(a+b)+bc(b+c)+ca(c+a)+3abc
(1) (5x)=(b+c)a²+(b²+3bc+c²)a+bc(b+c)
(2)
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉