actually i was going to go, but then i saw your question so thought to answer it ,
now , y=x2−2x−3
now y is also eqal to 1 so
y=1
if we quate both of them then,
1=x2−2x−3
Take 1 to the other side
x2−2x−3−1=0
x2−2x−4=0
now it has turned into a simple quadratic equation that you can solve either by factirisation or by the quadratic formula!


