**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.

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.