Question

-2/sqr2 divided by 1/4sqr2

How to solve it?

Answer 1

\[\huge \frac{ -2 }{ \sqrt2 } \div \frac{ 1 }{ 4\sqrt2 }\]
Dividing by a fraction is equivalent to multiplying by the inverse of the fraction, so this becomes:
\[\huge \frac{ -2 }{ \sqrt2 } \times \frac{ 4\sqrt2 }{ 1 }\]

Answer 2

could you solve it further please ?

Answer 3

All you need to do now is multiply the numerators together, and the denominators together.

Answer 4

so the top will be -8 root 2 divided by root 2 ?

Answer 5

Correct. Now you can simplify.

Answer 6

will the answer be -8?

Answer 7

Yep.

Answer 8

but my calculator gives me -4 and the answer is -4

Answer 9

http://www.wolframalpha.com/input/?i=-2%2F%28sqr2%29+divided+by+%281%2F%284sqr2%29%29

Unless you've written the problem incorrectly, the answer is -8.

Answer 10

thanks anyway.

Answer 11

Thats why I was confused. I did it by hand the checked with my cal and I got different answers .

Answer 12

\[\huge \frac{ -2 }{ \sqrt2 } \div \frac{ 1 }{ 4\sqrt2 }\]
\[\huge \frac{ \frac{ -2 }{ \sqrt2 }} { \frac{ 1 }{ 4\sqrt2 } }\]

As long as the problem looks like either of these, it's equal to -8.