Question

If 1 is a zero of the polynomial ax square-3(a-1)x-1 then find the value of a

Answer 1

Hey !!
Check the attachment.
Hope it helps :)

Answer 2

put x=1
 then a*1^2-3(a-1)1-1=0
         a-3a+2-=0
           -2a=-2
              a=1