4(χ-y)²-9﹙χ﹢y﹚² 2a³-4a²+2a
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/06 04:24:51
x)3y|=t)[X9w\T~,Q"a 6I6JI*ҧ1v6r[r#z#
@`
F =0]
] Divni&DH*V
؏/FPA]DmCM&Qyv@ -
4(χ-y)²-9﹙χ﹢y﹚² 2a³-4a²+2a
4(χ-y)²-9﹙χ﹢y﹚² 2a³-4a²+2a
4(χ-y)²-9﹙χ﹢y﹚² 2a³-4a²+2a
4(χ-y)²-9﹙χ﹢y﹚²
=(2χ-2y)²-﹙3χ﹢3y﹚²
=(2x-2y+3x+3y)(2x-2y-3x-3y)
=(5x+y)(-x-5y)
=-(5x+y)(x+5y)
2a³-4a²+2a
=2a(a²-2a+1)
=2a(a-1)²