30.
1) 1
22
3) 4
4)8
Answers
Answered by
2
Answer:
let x= given expression. squareing both sides.
x^2=2+x
x^2-x-2=0
(x-2)(x+1)=0
x=2 or -1
x=-1 is impossible.since x is positive.
There fore x=2
Answered by
13
Step-by-step explanation:
GIVEN
see in picture
repeated red area is exactly
same as x
☆ then we can substitute X into the red area ,
Now we have a simple equation
⬅️
squaring both side of the equation
x = 2 , -1
here we use 2 for x because x^2 can never be negative.
NOW
value of x put in equation (i)
so , the equation is true
then solution of this question is x = 2
hence option 2 is the right answer ✔
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