## anonymous 5 years ago Simplify ____ √-32 A.)4i√2 B.)-6i√5 C.)-6√5 D.)6√5

1. anonymous

What do you think it is?

2. anonymous

b

3. anonymous

4. anonymous

ok what happens to 6 if you put it back under the radical?

5. anonymous

idk

6. anonymous

ok if we take 6^2 that is going to = the same as $\sqrt{36}$

7. anonymous

6

8. anonymous

now if we take 36 and multiply it by the 5 we left under the radical we are going to get 180

9. anonymous

so this already proves b wrong. correct? look at the negitive sign under the radical when it comes out we indicate that with putting a "i" next to our answer and the negitive sign disapears so we now know the answer is?

10. anonymous

D?

11. anonymous

explain to me how you came up with that.

12. anonymous

i know we had 6 and we drop the - sigh so it has to be D

13. anonymous

what is 6^2 times 5?

14. anonymous

36*5=180 so we know it's not that one

15. anonymous

180

16. anonymous

so it must be A

17. anonymous

the correct answer is A do you see how it works out?

18. anonymous

besides the trail and error methode we just worked out?

19. anonymous

yes thanks so much

20. anonymous

no problem good luck to you