Question

八年级数学因式分解

八年级数学因式分解(2a+b)(2a-3b)-3a(2a+b)

Answer 1

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

Answer 2

=

追答

=4a²-6ab+2ab-3b²-6a²-3ab
=-2a²-7ab-3b²
=2a²+7ab+3b²