Question

What number can you multiply by −√2 to get a rational number?

Select each correct answer.

A. 1/2

B. √2

C. 0

D. 2

Answer 1

@vocaloid

Answer 2

hey mehek i've looking for to help me with this ?

Answer 3

Well, you can't just give an answer with out understanding HOW to do it..

Answer 4

Do you know what a rational number is?

Answer 5

yes it is any number that can be expressed of the quotient or a fraction

Answer 6

Right so if you do -√2 * 1/2 does that give you a rational number?

Answer 7

yes

Answer 8

No it does not

Answer 9

hint: -√2 * 1/2 = (-√2)/2

since it still contains √2 it is not rational, because √2 cannot be expressed as the quotient of 2 rational numbers

Answer 10

now what about -√2 * √2 = ?