化简,(4a-2b+3c)^2-(4a+2b-3c)^2
问题描述:
化简,(4a-2b+3c)^2-(4a+2b-3c)^2
答
(4a-2b+3c)^2-(4a+2b-3c)^2
=[(4a-2b+3c)+(4a+2b-3c)][(4a-2b+3c)-(4a+2b-3c)]
=8a*(-4a+6c)
=-32a^2+48ac