Harder Surds Questions (1 Viewer)

[bujolover]

Hi guys,
Yet more questions... :/

Q1.
I feel like the given answer is wrong...I keep getting a = n + 1, but the answer says a = n - 1.

Q2. I'm actually not sure how to do this question; I don't feel like the given answer is wrong, so please provide working out for this question if I'm wrong.
... I got a = 8√(x¹¹), but the given answer says 8x¹¹.

Thanks in advance! (You don't have to answer both questions in the same post. )

 

[1729]

Hi guys,
Yet more questions... :/

Q1. View attachment 33902
I feel like the given answer is wrong...I keep getting a = n + 1, but the answer says a = n - 1.

Q2. I'm actually not sure how to do this question; I don't feel like the given answer is wrong, so please provide working out for this question if I'm wrong.
View attachment 33903... I got a = 8√(x¹¹), but the given answer says 8x¹¹.

Thanks in advance! (You don't have to answer both questions in the same post. )

 

[bujolover]

Thank you.