Question

Which of the following are null sets ?(i){x:3x² - 4 = 0 is an integer. } (ii) { x: (x+3) (x+3) = 9 , x is areal no. }​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

(i) {x:3x²-4=0 is an integer}

Now 3x²-4=0

=> 3x²=4

=> x²=4/3

=> x is not an integer

so it's a null set.

(ii){x:(x+3)(x+3)=9 ,x is a real number}

Now (x+3)(x+3)=9

=> (x+3)²=9

=> x=0 ,a real number.

so it is not a null set.

hope you got it.