Question

What is the solution set of the following equation? a){1, 2} b){1, 1/2} c){2, 1/2}

Answer 1

Answer is c){2, 1/2}

cause

4/5(2^2) = 2(2) - 4/5
4/5(4) = 4 - 4/5
16/5 = 20/5 - 4/5
16/5 = 16/5 .............TRUE

4/5(1/22^2) = 2(1/2) - 4/5
4/5(1/4) = 1 - 4/5
1/5 = 5/5 - 4/5
1/5 = 1/5 .............TRUE

Answer 2

4/5.1 = 2.1 - 4/5 <=> 4/5 = 6/5 => Wrong
Hence, x isn't 1.
The answer is C.