HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
1. A
2. C
3. B
4. A
5. D
6. A
7. D
a: P(x)=6x^4+5x^3-3x^2+5x-10
Q(x)=5x^4+5x^3+2x^2-4x+4
b: P(x)+Q(x)
=6x^4+5x^3-3x^2+5x-10+5x^4+5x^3+2x^2-4x+4
=11x^4+10x^3-x^2+x-6
P(x)-Q(x) =6x^4+5x^3-3x^2+5x-10-5x^4-5x^3-2x^2+4x-4
=x^4-5x^2+9x-14
P(x) = 2x4 + 3x3 + 3x2 - x4 - 4x + 2 - 2x2 + 6x
Q(x) = x4 + 3x2 + 5x - 1 - x2 - 3x + 2 + x3
P(x)+Q(x) = 2x4 + 3x3 + 3x2 - x4 - 4x + 2 - 2x2 + 6x + x4 + 3x2 + 5x - 1 - x2 - 3x + 2 + x3
P(x)+Q(x) = (2x4-x4+x4) + (3x3+x3) + (3x2-2x2+3x2-x2) - (4x-6x-5x+3x) +(2-1+2)
P(x)+Q(x) = 4x3+3x2-4x+3
chúc bn học tốt :)) đánh giá giúp mik nha!
1 act
2 sing
3 play
4 dance
5 improve
6 fix
7 watch
8 perform
9 collect
10 join
11 visit
1. am going to meet
2. fought
3.happens
4. will take
5. will take place
6. bought/ 29. is going to leave
7. went
8. jogging
9. bought
10. leave
11.bought
12 to travel
13. learn
14 is going to travel
15. study
16. taught
17. aren't watching
18.cooking
19. playing
20. visiting
bình chọn giúp mik :)) chúc bn học tốt
30. brought
31.sizes
33. through
34, grows