Question

x^2/5-x^1/5-2=0

Answer 1

i think this is my last one

Answer 2

any help please

Answer 3

im tired only 3 hours of sleep this morning

Answer 4

Hint:

\[(x^{1/5})^2 - x^{1/5} - 2 = 0\]

Answer 5

i hate fractions. But ill try x^1/10-x^1/5-2=0

Answer 6

No, that's not the next step. Think quadratically

Answer 7

add 2 to the other side!

Answer 8

or mx+b

Answer 9

no

Answer 10

hold on i think i got it!

Answer 11

u^2-x^5-2=0

Answer 12

(x+2)(x-1)

Answer 13

oh the (x-2)(x+1) then set them to 0 so x=2 x=-1

Answer 14

right? (2,-1)

Answer 15

Yes. But now make the inverse substitution to get the solution!

Answer 16

I did. Didn't I?

Answer 17

What is the solution of your origin equation? Type it right here!

Answer 18

2,-1?

Answer 19

I need to go for a few mintutes

Answer 20

but its all there

Answer 21

If it is so, what will be \(\sqrt[5]{-1}\) ?

Answer 22

-5

Answer 23

Im lost!

Answer 24

u = x^(1/5)
u^2 - u - 2 = 0
(u-2)(u + 1) =0

u - 2 = 0
u + 1 = 0

x^(1/5) - 2 = 0
x^(1/5) + 1 = 0

x^(1/5) = 2
x^(1/5)^5 = 2^5
x = 2^5
x = 32

x^(1/5)^5 = -1^5
x = -1

Answer 25

oh thank you