1. The problem statement, all variables and given/known data 2. Relevant equations Not Sure. 3. The attempt at a solution For the first question I know you have to multiply the conjugate of the denominator so it would be (2 - √5)/(1−2√5) x (1−2√5)/(1−2√5) but I'm not sure how to actually do that. For the second question. I have that -3 x 2 = -6 and -3 + 2 = -1 which fits the sum. I think this is correct. for this second part of the second question, I'm not sure how to solve this as I don't see any factors of -6 which when added together = 11.