Question

write the RF of root 3,7root11​

Answer 1

Answer:

If RF means rationalising factor then the answer is here:

Step-by-step explanation:

a rationalising factor is number which is multiplied to the irrational to convert it to rational number.

so when we se

(i)Rf for√2

will be √2 only

we can prove it √2*√2=2

2 is rational

(ii)Rf for√3

will be √3 only

we can prove it √3*√3=3

3 is rational

(iii)Rf for√7

will be √7 only

we can prove it √7*√7=7

7 is rational

(iv)Rf for√11

will be √11 only

we can prove it √11*√11=11

11 is rational

but remember that always it will not be the number it self

se an example

√50

we can write it as

√2*5*5=√50

we can write it as

5√2=√50

now what should we multiply to 5√2 to make it rational

we should multiply √2

5√2*√2=10

therefore RF for √50 is √2