HELPLP

1). 18

Step-by-step explanation:

1). The numbers above are real numbers but on a care ful look the number below it is a squrea of the number above but it's position ois swapped.

What am I saying., Let's take for example the number 4.

4² = 16 but what's written is 61

Let's take 5

5² = 25 but what's written is 52

Let's take 6

6² = 36bl but what's written is 63.

So as for 9

9²= 81 but what will be in the box = 18

2).this number two is something special

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11