计算|5a-2b|*|2b-5a|
问题描述:
计算|5a-2b|*|2b-5a|
答
|5a-2b|*|2b-5a|
=(5a-2b)²
=25a²-20ab+4b²
计算|5a-2b|*|2b-5a|
|5a-2b|*|2b-5a|
=(5a-2b)²
=25a²-20ab+4b²