You need to first make everything positive:
x^2=36
Then you need to get the square root of each side:
x=6 or -6
Hope this helps :)
Yes I do believe they are similar.
Subtract each number from 190 and then you have all of your answers
Step-by-step explanation:

Answer:
2:10
Step-by-step explanation:
multiply both numbers by the same number(ie. 2,3,4) and the rotio will still be the same