化簡:(2a*2-3a+5)(2a*2+3a-5)*后2為指數
熱心網友
(2a*2-3a+5)(2a*2+3a-5)=(2a*2-(3a-5))(2a*2+(3a-5))=4a*4-(3a-5)*2=4a*4-9a*2+30a-25
熱心網友
自己做啊
熱心網友
原式=[2a*a-(3a-5)][2a*a+(3a-5)] =(2a*a)^2-(3a-5)^2 =4a^4-9a^2+30a-25注:a^n是指a的n次方
熱心網友
(2a*2-3a+5)(2a*2+3a-5)=(2a*2-(3a-5))(2a*2+(3a-5))=4a*4-(3a-5)*2=4a*4-9a*2+30a-25