Question

1. Solve by formula method : x2 - 2x-3=0​

Answer 1

Answer:

x=3 or x=-1

Step-by-step explanation:

x^2-2x-3=0

x^2+x-3x-3=0

x(x+1)-3(x+1)=0

(x-3) (x+1)=0

therefore,x=3 or x=-1