Question

can someone tell me if im right?

Answer 1

@ganeshie8 can you help?

Answer 2

what is your reasoning?

Answer 3

i think its a

Answer 4

But why do you think it is (a) ?

Answer 5

i have notes from my lesson, and i based it off of them(:

Answer 6

well attempted too xD

Answer 7

I see. I agree with (a).
The radical can be converted to a reciprocal power:
\( \sqrt[n]{a} = a^{1/n} \)
In this case:
\( \sqrt[4]{7^5} = \left( 7^5 \right) ^{1/4} = 7^{5/4} \)

Answer 8

Thank you (:

Answer 9

can you help me with one? i dont understand it

Answer 10

Sure. Just post it. :)

Answer 11

site broke on me last time :)

i was going to demonstrate it like this: let y = 4rt(7^5), and y<0

^4 each side: y^4 = 7^5

log it out: 4 log(y) = 5 log(7)

divide off the 4: log(y) = 5/4 log(7)

rewrite the log: log(y) = log(7^(5/4))

and unlog it: y = 7^(5/4)

Answer 12

lol, um, y > 0