Các câu hỏi tương tự
NHan cac don thuc sau va tim bac va he so cua don thuc nhan duoc:
(\(\frac{1}{3}\)x\(^3\)y).(-xy)\(^2\)
(2x²y)²nhan 3phan4 xy²
a,thu gon don thuc va tim bac cua don thuc tren
Cho don thuc A=(-2xy)-4/5x^2y^3 a,Thu gon don thuc tren ,cho biet phan he so va phan bien ,tim bac cua don thuc b,Tinh gia trim cua don thuc tai x=1,y=-1
Cho don thuc A=(-2xy)-4/5x^2y^3 a,Thu gon don thuc tren ,cho biet phan he so va phan bien ,tim bac cua don thuc b,Tinh gia trim cua don thuc tai x=1,y=-1
THU GON DON THUC SAU VA CHO BIET PHAN HE SO ,PHAN BIEN CUA DON THUC THU DUOC
-AX(xy^3).1/4.(-by)^3 (voi a,b la hang so)
cac ban oi giup minh voi
thu gon cac don thuc va chi ra phan he so cua chung 5x mu 2 nhan 3xy mu 2
A=1/3(xy^2)^2.(1/2x^2y)^2.4/5.x^3
B=-2x^4y.1/4x^2.y^2.(-2xy)^3
Thu gon da thuc tren
Xac dinh he so ,bac cua cac don thuc vua thu gon
Tinh A+B va A-B
tim tong cac he so cua da thuc nhan duoc sau khi bo dau ngoac trong bieu thuc (3-4x+x^2)^2006.(3+4x+x^2)^2007
Thu gon cac don thuc sau roi tim he so va bac cua no
a, (-2xy^3). (1/3xy)^2
b,18x^2y^2 . (-1/6x^3y)
c, (-2/3xy^2) . 6x^2y^2