Các câu hỏi tương tự
thu gon va tim bac cua don thuc 2xy(x^2yz)
(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 va tim bac cua don thuc 2xy(1/2x^2yz)
ai giup mk voi
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
thu gon don thuc tim bac he so cua da thuc A=x^3 *(-5/4x^2y)*(2/5x^3y^4)
thu gon don thuc tim bac he so cua da thuc A=x^3 *(-5/4*x^2*y)*(2/5*x^3*y^4)
A=1/3(xy^2)^2.(-1/2x^2y)^2.4/5x^3
B=-2x^4y.1/4x^2y^2.4/5x^3
Thu gon da thuc tren
Xac dinh he so,tim bac cua da thuc vua tim dc
Tinh A+B
va A-B
Bai 2
A=15x^2y-7xy^2+8-y^3+7xy^2+2y^3-12x^2y-1/2
Thu gon da thuc
Tim bac cua da thuc
Tinh gia tri cua da thuc A tai x=-1/2,y=1