Question

X2-2=0,xis the set of rational no. It is set or null

Answer 1

Answer:

X is a set {1}

Step-by-step explanation:

X=1, (1)2-2=0

Answer 2

Answer:

let x=1

then

Step-by-step explanation:

replace x by 1 in x2-2=0

x={1}

(1)2-2=0

2-2=0

it is a null

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