Question

hi
I will mark as brain list
Please tell me answer of this question with Step-by-step explanation ​

Answer 1

a = ( y/y^2 + 5 = 2y^2 + 4 )

a = ( y^2/y^2 + 5 = 4y^2 + 4 )

a = (1 + 5 = 4(y^2) )

a = ( 6 = 4(y^2) )

a = 6/4 = y^2

a = 2/3 = y^2

Answer 2

Step-by-step explanation:

it is Given That,

$a = \frac{y}{ {y}^{2} + 5} = 2 {y}^{2} + 4$

Now ,

$a = y = (2 {y }^{2} + 4) ( {y}^{2} + 5)$

$a = y = (2 {y}^{4} + 10 {y}^{2} + 4 {y}^{2} + 20)$

$a = y = 2 {y}^{4} + 14 {y}^{2} + 20$

$a = y = 2( {y}^{4} + 7 {y}^{2} + 10)$

$a = y = 2( {y}^{4} + 2 {y}^{2} + 5 {y}^{2} + 10)$

$a = y = 2 ( {y}^{2} ( {y}^{2} + 2) + 5( {y}^{2} + 2)$

$a = y = 2( {y}^{2} + 5)( {y}^{2} + 2)$

so from Here We get

$a = y$

Hence the

$y \: belongs \: to \: i$

So Integer are from are those which are negative or positive so The Sets are not unit set as there is some value

So these are Not Singleton Set.