Find the median:
9, 20, 17,5, 3

9

Step-by-step explanation:

1) order all numbers least to greatest:

3,5,9,17,20

cross of a number on the right side and do the same on the left until u have 1 number left

u will be left with 9

9 is ur median

hope this helps!

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!