Question

.

Answer 1

both are incorrect.
how did u get those?

Answer 2

I made mistake i meant the last one was false

Answer 3

after u edited,only 2nd is incorrect.

Answer 4

can you check if i am right on this:
r= 1 is a root of 4x^2 - 3x - 1 = 0

^ true

r= -1 is a root of 4x^2 - 3x - 1 = 0

^false

Answer 5

both are correct :)