Simplify square root of 5 open parentheses 10 minus 4 square root of 2 close parentheses.

14
15 square root of 2
5 square root of 2 end root minus 4 square root of 10
None of the above

Question

Simplify square root of 5 open parentheses 10 minus 4 square root of 2 close parentheses.

 14
 15 square root of 2
 5 square root of 2 end root minus 4 square root of 10
 None of the above

celinegirl · Answer

I can post a snapshot if its confusing

anonymous · Answer

yes please post a pic lol

anonymous · Answer

I think I understand it but I just want to double check

celinegirl · Answer

Sure (:

anonymous · Answer

I would say first you need to solve for the square roots. So the square root of 5 is  2.2 rounded to the nearest tenth and the square root of 2 is 1.4 rounded to the nearest tenth.

anonymous · Answer

Now you can rewrite your expression as $$2.2(10-4(1.4))$$

calculusxy · Answer

$$\sqrt{5}(10 - 4\sqrt{2})$$
$$10\sqrt{5} - 4\sqrt{10}$$

anonymous · Answer

now we solve using pemdas. So starting the parentheses with the multiplication we have 4*1.4=5.6. Now we solve for the rest of the parentheses with 10-5.6=4.4.

anonymous · Answer

Now all we have to do is multiply 2.2*4.4=9.68... So does that match up with any of your options?

anonymous · Answer

Hopefully I am right.... Sorry if I am not

celinegirl · Answer

@kimbllse777 C right?

shamil98 · Answer

no.
the answer would be as calculusxy posted
since it's not an option
go with none of the above.

celinegirl · Answer

I just dont want to get it wrong

shamil98 · Answer

it's the last option, D.
lol.

celinegirl · Answer

@shamil98 ok thank you