Question

因式分解9（x-y）²＋12（x-y）＋4

因式分解9（x-y）²＋12（x-y）＋4

Answer 1

图

Answer 2

参考

Answer 3

=9（x²-2xy+y²）+12x-12y+4
=9x²-18xy+9y²+12x-12y+4

Answer 4

(3x-3y+2)^2