Find all values of b for which the equation x^2-bx+25=0 has equal roots

First, you will do q/p= + or - 1, +or - 5, + or - 25

Then you would plug each number into the equation and find out which number of the 6 equal 0 and then take the number that made the equation equal to 0 and use synthetic division. Using the answer of synthetic division solve for X and you will get your answer

Could you make it more clear?