## Mahent1 one year ago radical addition

1. Mahent1

$\sqrt[3]{20}+\sqrt[2]{5}$

2. Mahent1

@geerky42 @kropot72

3. Mahent1

not even a single person is helping

4. Mahent1

@YanaSidlinskiy @Kainui @kropot72 @Hero @campbell_st @iambatman @freckles @ganeshie8

5. Mahent1

@Nnesha are you going to help or just stare at the question?

6. YanaSidlinskiy

Rule #1: Be nice:)

7. Nnesha

$$\color{blue}{\text{Originally Posted by}}$$ @Mahent1 $\sqrt[3]{20}+\sqrt[2]{5}$ $$\color{blue}{\text{End of Quote}}$$ first of all are you sure its square root of 5 ? $\sqrt{ }$ simple radical sign means square root no need to write 2

8. Mahent1

i copied it from the question

9. YanaSidlinskiy

Have you tried attempting the problem? If so, what was your answer?

10. Nnesha

|dw:1438988429502:dw| :=)

11. geerky42

Exactly what's the question here? Looks like you cannot simplify any further.

12. Nnesha

take a screenshot. o^_^o

13. Mahent1

i need it in simplest form

14. geerky42

Like you want $$\sqrt[3]{20}+\sqrt5$$ in decimal form?

15. geerky42

because you can't really simplify it.

16. Mahent1

here's what it says: What is $3\sqrt{20}+2\sqrt{5}$ in simplest form A 5√5 B 5√25 C 14√5 D 8√5

17. Nnesha

o^_^o ^

18. geerky42

well, this clears things up

19. Nnesha

what are the factors of 20 ?

20. Mahent1

1, 2 , 4, 5 ,10, 20 ?

21. YanaSidlinskiy

As to what Nnesha has said, it does simplify.

22. geerky42

OP initially typed $$\sqrt[3]{20}+\sqrt5$$, which cannot be simplified.

23. Nnesha

alright one of the number should be perfect square so 4,5 looks good :=) $\huge\rm 2 \sqrt{\color{reD}{4} \times 5} + \sqrt{5}$ 1st) take square root of 4 which is = 2 $\huge\rm 2 \times \color{reD}{2} \sqrt{ 5} + \sqrt{5}$ multiply the numbers front of the sqrt{5} and then take out the commmon factor

24. Mahent1

4?

25. Nnesha

$\huge\rm 4 \sqrt{5} + \sqrt{5}$ what is common factor ?

26. Mahent1

√5?

27. Nnesha

yes right so take it out $\sqrt{5}(???)$ when you take out sqrt{5{ from 4sqrt{5} what would u have lef?

28. Mahent1

4

29. Nnesha

yes right so when you take out sqrt{5} from sqr{5} what would have left?

30. Mahent1

nothing?

31. Nnesha

|dw:1438989226123:dw|

32. Nnesha

nothing is not an answer :=) bascally you need to divide both terms by common factor $\frac{ 4\sqrt{5} }{ \sqrt{5} } + \frac{ \sqrt{5} }{ \sqrt{5} }$ $\sqrt{5}(4+???)$ sqrt{5} divide by square root 5 ??

33. Mahent1

1

34. Nnesha

yes right so nothing is not an answer :=) $\sqrt{5}(4+1)$ = ??

35. Mahent1

4+1=5

36. Nnesha

yes right so final answer is ?

37. Mahent1

5√5?

38. Nnesha

:=)

39. Nnesha

that's right! :=)

40. Mahent1

ok thanks...

41. Nnesha

my pleasure :=)