Question

√2+√2 is equal to
A-√4
B-0
C-2√2
D-(√2)^√2​

Answer 1

Answer:

Let D

1

and D

2

be the discriminants of the two equations, then

D

1

≥0 and D

2

≥0

⇒4b

2

−4ac≥0 and 4ac−4b

2

≥0

⇒b

2

≥ac and ac≥b

2

⇒b

2

=ac

Answer 2

2 root 2 is the correct answer of the question