Question

a - 1/2a = 1, Then find the value of (a^2 - a)

Answer 1

a-1/2a = 1
=>(2a²-1)/2a=1
=>2a²-1=2a
=>2a²=2a+1
=>a= (2a²-1)/2
=>a=a²-1/2
=>a²-a=1/2
so the answer is 1/2