Hi can someone help me with this math question! :) Please dont put a fake answer <3 This is for my math test! :D

8

step-by-step explanation:

this is a subtraction problem.

10 - 2 = 8

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

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!