Mathematics
Senior High
Solved
(2)の2行目から3行目になる理由を教えてください
= (x+2y)(x-2y)(x²+4y²)
(2) (x²+y²)²-4x²y²=(x² + y²)² - (2xy)²
= (x²+y²+2xy)(x² + y²-2xy)
(x+y)²(x−y)²
=
(3) (x-y)³-x+y=(x−y)³-(x−y)
=(x−y){(x-v)²-1}
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
Recommended
【受験】センター数学最終チェックリスト
921
5

言われて気づきました!
ありがとうございますm(*_ _)m