$1$

$\sqrt{2}$

$\sqrt{2}$

$\sqrt{2}+\sqrt{3}$

$\sqrt{6}$

100

160

90

2000

50

$2x^3+3x^2-4x-5$

$2x^3-3x^2+4x-5$

$2x^3+3x^2+4x-5$

$2x^3-3x^2-4x-5$

$2x^3+3x^2+4x+5$

33

32

21

36

30

1

2

3

-1

-2

6

3

9

8

-5