4(2a+3b)^2-(3a-b)^2 因式分解

问题描述:

4(2a+3b)^2-(3a-b)^2 因式分解

4(2a+3b)^2-(3a-b)^2
=(4a+6b)²-(3a-b)²
=(4a+6b+3a-b)(4a+6b-3a+b)
=(7a+5b)(a+7b)