Câu hỏi của 이성경

Question

Thuc hien phep tinh

a, [ x2y2- 1/3xy+3y13xy+3y ] (x-3y)

b, (x^2+xy+y^2) (x-y)

c, (1/5x-1) (x^2-5x+2)

d, (x^2-2xy+y^2) (x-y)

Nguyễn Minh Tâm · Accepted Answer

d. ( x² - 2xy + y² ) ( x-y )
= ( x- y )²( x- y )
= ( x - y )³

Câu trả lời:

d. ( x² - 2xy + y² ) ( x-y )
= ( x- y )²( x- y )
= ( x - y )³

Nguyễn Minh Tâm · Answer

b, (x^2+xy+y^2) (x-y)
= ( x+ y )² ( x- y )
= ( x² - y ² ) ( x +y )

Câu trả lời:

b, (x^2+xy+y^2) (x-y)
= ( x+ y )² ( x- y )
= ( x² - y ² ) ( x +y )