首页
/
每日頭條
/
生活
/
方程有實數根的條件
方程有實數根的條件
更新时间:2024-10-12 04:25:43

方程有實數根的條件(在實數範圍内解方程)1

解:原方程可變為:[(x 3)³ x³] [(x 2)³ (x 1)³]=0

∴(2x 3)(x² 6x 9-x²-3x x²) (2x 3)(x² 2x 4-x²-3x-2 x² 2x 1)=0

∴(2x 3)(x² 3x 9) (2x 3)(x² x 2)=0

∴(2x 3)(2x² 4x 11)=0

∴2x 3=0或2x² 4x 11=0

當2x 3=0時,x=-3/2

當2x² 4x 11=0時,△<0,無實根

∴原方程的解為:x=-3/2

,
Comments
Welcome to tft每日頭條 comments! Please keep conversations courteous and on-topic. To fosterproductive and respectful conversations, you may see comments from our Community Managers.
Sign up to post
Sort by
Show More Comments
Copyright 2023-2024 - www.tftnews.com All Rights Reserved