Question

A is a set of zeroes of x square - 3 x + 2 write the sub set of A

Answer 1

Here A is a set of roots of the equation
x^2-3x+2=0
Or, x^2-2x-x+2=0
Or, x(x-2)-1(x-2)=0
Or,(x-2)(x-1)=0
hence either x-2=0
Or, x=2
/OR x-1=0
Or, x=1
therefore A={1,2}
hence subsets of A are φ, {1}, {2}, {1,2}