Câu trả lời:
c)\(\dfrac{a\sqrt{b}+b\sqrt{a}}{\sqrt{ab}}:\dfrac{1}{\sqrt{a}-\sqrt{b}}=\dfrac{\sqrt{ab}\left(\sqrt{a}+\sqrt{b}\right)}{\sqrt{ab}}.\left(\sqrt{a}-\sqrt{b}\right)\)
\(=\left(\sqrt{a}+\sqrt{b}\right).\left(\sqrt{a}-\sqrt{b}\right)=a-b\)
Nhiều câu nó chỉ hiện nghiêng thôi bạn cố nhìn nhé!
1. A. proofs | B. books | C. points | D. days |
2. A. helps | B. laughs | C. cooks | D. finds |
3. A. neighbors | B. friends | C. relatives | D. photographs |
4. A. snacks | B. follows | C. titles | D. writers |
5. A. streets | B. phones | C. books | D. makes |
6. A.cities | B. satellites | C. series | D. workers |
7. A. develops | B. takes | C. laughs | D. volumes |
8. A. phones | B. streets | C. books | D. makes |
9. A. proofs | B. regions | C. lifts | D. rocks |
10. A. involves | B. believes | C. suggests | D. steals |
11.A.remembers | B. cooks | C. walls | D. pyramids |
12. A. miles | B. words | C. accidents | D. names |
13. A. sports | B. plays | C. chores | D. minds |
14. A. nations | B. speakers | C. languages | D. minds |
15. A. proofs | B. looks | C. lends | D. stops |
16. A. dates | B. bags | C. photographs | D. speaks |
17. A. parents | B. brothers | C. weekends | D. feelings |
18. A. chores | B. dishes | C. houses | D. coaches |
19. A. works | B. shops | C. shifts | D. plays |
20. A. coughs | B. sings | C. stops | D. sleeps |
21.A.signs | B. profits | C. becomes | D. survives |
22. A.walks | B. steps | C. shuts | D. plays |
23.A.wishes | B. practices | C. introduces | D. leaves |
24. A. grasses | B.stretches | C. comprises | D. potatoes |
25. A. desks | B. maps | C. plants | D. chairs |
26. A. pens | B. books | C. phones | D. tables |
27. A. dips | B. deserts | C. books | D. camels |
28. A. miles | B. attends | C. drifts | D. glows |
29. A. mends | B. develops | C. values | D. equals |
30. A. repeats | B. classmates | C. amuses | D. attacks |
31. A. humans | B. dreams | C.concerts | D. songs |
32. A. manages | B. laughs | C.photographs | D. makes |
33. A. dishes | B. oranges | C. experiences | D. chores |
34. A. fills | B. adds | C. stirs | D. lets |
35. A. wants | B. books | C. stops | D. sends |
36. A. books | B. dogs | C. cats | D. maps |
37. A. biscuits | B. magazines | C. newspapers | D. vegetables |
38. A. knees | B. peas | C. trees | D. niece |
39. A. cups | B. stamps | C. books | D. pens |
40. A. houses | B. faces | C. hates | D. places |
41. A. schools | B. yards | C. labs | D. seats |
42. A. names | B. lives | C. dances | D. tables |
43. A. nights | B. days | C. years | D. weekends |
44. A. pens | B. markers | C. books | D. rulers |
45. A. shakes | B. nods | C. waves | D. bends |
46. A. horse | B. tools | C. house | D. chairs |
47. A. faces | B. houses | C. horses | D. passes |
48. A.president | B. busy | C. handsome | D. desire |
49. A. sweets | B. watches | C. dishes | D. boxes |
50. A. dolls | B. cars | C. vans | D. trucks |
1. A. proofs | B. books | C. points | D. days |
2. A. helps | B. laughs | C. cooks | D. finds |
3. A. neighbors | B. friends | C. relatives | D. photographs |
4. A. snacks | B. follows | C. titles | D. writers |
5. A. streets | B. phones | C. books | D. makes |
6. A. cities | B. satellites | C. series | D. workers |
7. A. develops | B. takes | C. laughs | D. volumes |
8. A. phones | B. streets | C. books | D. makes |
9. A. proofs | B. regions | C. lifts | D. rocks |
10. A. involves | B. believes | C. suggests | D. steals |
11. A. remembers | B. cooks | C. walls | D. pyramids |
12. A. miles | B. words | C. accidents | D. names |
13. A. sports | B. plays | C. chores | D. minds |
14. A. nations | B. speakers | C. languages | D. minds |
15. A. proofs | B. looks | C. lends | D. stops |
16. A. dates | B. bags | C. photographs | D. speaks |
17. A. parents | B. brothers | C. weekends | D. feelings |
18. A. chores | B. dishes | C. houses | D. coaches |
19. A. works | B. shops | C. shifts | D. plays |
20. A. coughs | B. sings | C. stops | D. sleeps |
21. A. signs | B. profits | C. becomes | D. survives |
22. A. walks | B. steps | C. shuts | D. plays |
23. A. wishes | B. practices | C. introduces | D. leaves |
24. A. grasses | B. stretches | C. comprises | D. potatoes |
25. A. desks | B. maps | C. plants | D. chairs |
26. A. pens | B. books | C. phones | D. tables |
27. A. dips | B. deserts | C. books | D. camels |
28. A. miles | B. attends | C. drifts | D. glows |
29. A. mends | B. develops | C. values | D. equals |
30. A. repeats | B. classmates | C. amuses | D. attacks |
31. A. humans | B. dreams | C. concerts | D. songs |
32. A. manages | B. laughs | C. photographs | D. makes |
33. A. dishes | B. oranges | C. experiences | D. chores |
34. A. fills | B. adds | C. stirs | D. lets |
35. A. wants | B. books | C. stops | D. sends |
36. A. books | B. dogs | C. cats | D. maps |
37. A. biscuits | B. magazines | C. newspapers | D. vegetables |
38. A. knees | B. peas | C. trees | D. niece |
39. A. cups | B. stamps | C. books | D. pens |
40. A. houses | B. faces | C. hates | D. places |
41. A. schools | B. yards | C. labs | D. seats |
42. A. names | B. lives | C. dances | D. tables |
43. A. nights | B. days | C. years | D. weekends |
44. A. pens | B. markers | C. books | D. rulers |
45. A. shakes | B. nods | C. waves | D. bends |
46. A. horse | B. tools | C. house | D. chairs |
47. A. faces | B. houses | C. horses | D. passes |
48. A. president | B. busy | C. handsome | D. desire |
49. A. sweets | B. watches | C. dishes | D. boxes |
50. A. dolls | B. cars | C. vans | D. trucks |
:((