One root of f(x)=x^3+10x^2-25x-250 is x=-10. What are all the roots of the function? Use the Remainder Theorem

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)