Question

A2 = {x : x2-4x-5 = 0}​

Answer 1

Step-by-step explanation:

Given

x:x

2

−4x−5=0

⇒x

2

−5x+x−5=0

⇒x(x−5)+1(x−5)=0

∴x−5=0 or x+1=0

→x=5→x=−1

∴ Given set in roster (Tabular) Form is A

1

={5,−1}