a, P(x)=

=

=

Q(x)=

= -3x++(-14-1)-x

= -3x-x -15 -x

b, M(x)=P(x)+Q(x)=+ (-3x-x-15-x)

= -3x -x -15 -x

=(3x- 3x) + (x-x) + (-3x-x) + (7-15)

= -4x - 8

tìm bậc của đa thức đó : 

\(B=5xy+\dfrac{1}{2}x^2y-\dfrac{2}{3}xy+2x^2y\) 

giúp mình cần gấp giúp với hicccc

đc chưa bạn 

cho đa thức sau : thu gọn và tìm bậc của đa thức đó : 

\(A=2x^2 +x-\dfrac{1}{2}x^2+5x\)

help me please mình cần gấp giúp với mn ưi

đâynhé nhớ tick cho mình nhé bạn 

mong bạn tịk cho mình

Hi Kien

Thanks for your e-mail.Now I will tell you about my school.I studying in class 6a2 at Kinh Bac lower Secondary school. It's not big but cool. There are many trees on the schoolyard.There are three floors with 18 classes, I'm studying on the second floor. The boys in my school The boys in school I wear uniforms are shirts, jeans and red scarf. The girls in school I wear uniforms is shirts, skirts and red scaft.In school, I have 13 subjects. My favourite subject is music, biology and history.What about you? How is your school? Tell me in your next e-mail.

Your friend

Huong

Mình viết ko dc dài lắm đâu