Question

for rationalizing the denominator of 1/root 12 we multiply and divide by which number?
a)1/root 12
b)12
c)root 2
d)root 3

Answer 1

GIVEN :

For rationalizing the denominator of $\frac{1}{\sqrt{12}}$ we multiply and divide by which number?

TO FIND :

For rationalizing the denominator of $\frac{1}{\sqrt{12}}$ we multiply and divide by which number.

SOLUTION :

Given expression is $\frac{1}{\sqrt{12}}$

Now solving the given expression :

$\frac{1}{\sqrt{12}}$

We have to rationalize the denominator.

Now multiplying and dividing the expression by $\sqrt{12}$ we get,

$=\frac{1}{\sqrt{12}}\times \frac{\sqrt{12}}{\sqrt{12}}$

$=\frac{\sqrt{12}}{\sqrt{12\times 12}}$

By using the square root property :

$\sqrt{a}\times \sqrt{b}=\sqrt{a\times b}$

$=\frac{\sqrt{12}}{12}$

By using the square root property :

$\sqrt{a\times a}=a$

$\frac{1}{\sqrt{12}}=\frac{\sqrt{12}}{12}$

The given expression $\frac{1}{\sqrt{12}}$ is rationalized into $\frac{\sqrt{12}}{12}$

∴ option A) $\sqrt{12}$ is correct.

For rationalizing the denominator of $\frac{1}{\sqrt{12}}$ we multiply and divide by number is $\sqrt{12}$

Answer 2

Answer:

your ans is simple b) 12

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