Question

(2a+3b-c)-(3a-2b+c)

Answer 1

－a＋5b-2c
给个最佳 谢谢

追问

我也要过程！！谢谢！！

追答

=2a+3b-c-3a+2b-c
=-a+5b-2c
给个最佳谢谢 我任务

Answer 2

(2a+3b-c)²-(3a-2b+c)²
=[(2a+3b-c)+(3a-2b+c)]*[(2a+3b-c)-(3a-2b+c)]
=(5a+b)(-a+5b-2c)=-5a²+5b²+24ab-2bc-10ac