The answer to the problem is x=3
I think it would have to be a problem with a negative number plus and positive number...
Roots test tells us to take the factors of the 20 divided by the factors of the coefficient of the the first.
factors of 20 are 1,2,4,5,10,20
factors of 1 are 1
so plus or minus 1/1, 2/1, 4/1, 5/1, 10/1, 20/1 are all possible rational zeros
Set up fractions and solve them
The answer is 12/100. This is because the 12 is a 100 decimal place.