Factorization: (1) X2 - (y2-2y + 1); (2) A2 (X-Y) + B2 (Y-X); (3) 4x3y + 4x2y2 + XY3; (4) (a + 2) (A-8) + 25

Factorization: (1) X2 - (y2-2y + 1); (2) A2 (X-Y) + B2 (Y-X); (3) 4x3y + 4x2y2 + XY3; (4) (a + 2) (A-8) + 25


（1）x2-（y2-2y+1），=x2-（y-1）2，=（x+y-1）（x-y+1）；（2）a2（x-y）+b2（y-x），=a2（x-y）-b2（x-y），=（x-y）（a2-b2），=（x-y）（a+b）（a-b）；（3）4x3y+4x2y2+xy3，=xy（4x2+4xy+y2），=xy（2x+y）2...



Factorization, (a-b) (X-Y) - (B-A) (X-Y)
（a-b)(x-y)-(b-a)(x+y）


（a-b)(x-y)-(b-a)(x-y)
=(a-b)(x-y)+(a-b)(x-y)
=2(a-b)(x-y)
（a-b)(x-y)-(b-a)(x+y）
=(a-b)(x-y)+(a-b)(x+y)
=(a-b)(x-y+x+y)
=2x(a-b)

Elden Ring Premiere

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