Question

does anyone know how to solve: ^-3 x ^-128. and show how you obtain answer.

Answer 1

^-3 x ^-128 ?!!!?
It's new to me! Coud you just write it on the board?

Answer 2

\[ \sqrt{-3} \times \sqrt{-128}\]

Answer 3

= i √3 * i √128
= - √3 * √ 2^7
= -8 √6

Answer 4

ok.I got \[\sqrt{3} \pm \sqrt{2}\]

Answer 5

how did you get your answer? please and thanks.

Answer 6

Which part you don't understand?

Answer 7

pretty much none of it. did you multiply the numbers 3and2 under the radicand to get 6?

Answer 8

Yep!

Answer 9

√ - 128 = √-1 * √ 2^7
= i * √2^6 * 2
= 2^3 i √2
= 8i √2

Answer 10

Is it clear now?

Answer 11

oh yes, it is. thanks.

Answer 12

No more question?

Answer 13

nope. I'm all set.

Answer 14

That's what makes my day :)