Answer:
answer is 27/7
Explanation:
F(19) means u have to put the value of x as 19
so by putting 19 we get
3/19+2 -root (19-3)
so 3/21 - root 16
or 3/21 -4
or 3- 84/21
or 81/21
ans= 3x27/3x7= 27/7
thank u
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