root 20 plus root 20 plus infinity
Answers
Answered by
3
0 zero is the rq. answer
charitha6:
but answer mist be 5
Answered by
8
X=√(20+√(20+√(20+√(20….)))); —————1
X=√20+x; //from -1
Apply sqaure on both sides.
X^2=20+x;
X^2-x-20=0;
X^2–5x+4x-20=0;
X(X-5)+4(X-5)=0;
(X+4)(X-5)=0;
X=-4 ,X=5{as we know the square root value must not be a negative. So, X=-4 is not valid one}
Solution:- 5
X=√20+x; //from -1
Apply sqaure on both sides.
X^2=20+x;
X^2-x-20=0;
X^2–5x+4x-20=0;
X(X-5)+4(X-5)=0;
(X+4)(X-5)=0;
X=-4 ,X=5{as we know the square root value must not be a negative. So, X=-4 is not valid one}
Solution:- 5
Similar questions