Question

plz solve it as fast as you can​

Answer 1

Answer:

the answer is option d

hope it helps

and pls mark me as brainliest

Answer 2

Answer: B

mark me as brainliest

Step-by-step explanation:

Let  √{20 + √(20 + √20 ....)} be x  then,

Squaring both sides,

20 + √(20 + √20 ....) = x^2

or, 20+ x = x^2

or, x^2 -x-20 =0

or, x^2 -5x +4x-20= 0

or, x ( x-5) +4 (x-5) =0

or, ( x-5) (x+4) =0

∴ x =5  or -4 (rejected)

Hence B is the correct answer.