Question

x^{3/8} - 12 x^{3/16} + 36 = 0

Answer 1

Hello there. Any ideas?

Answer 2

can u solve quadratic equations ?

Answer 3

Yeah, but we're supposed to use substitution to solve this one.

Answer 4

right so substitute x^{3/16}=y

Answer 5

Right, I've tried that. And ended up with y^2 - 12y + 36, which I've then reduced to (y-6)^2=0

Answer 6

But apparently 6 is wrong....

Answer 7

because y=6
x is NOT 6

Answer 8

u need to find x from x^{3/16}=y

Answer 9

Right, right. So I just find what 6^(3/16) equals?

Answer 10

nope

Answer 11

Then what should I do?

Answer 12

x^{3/16}=y
x= y^{16/3}
x= 6^{16/3}

Answer 13

got that ^^ ?

Answer 14

Ohhh....okay, yeah. Thank you so much!

Answer 15

welcome ^_^

Answer 16

Thanks for the medal as well! ^_^

Answer 17

Have a good night.

Answer 18

good night to u, and good morning to me :)

Answer 19

Yes, I suppose so xp

Answer 20

Actually, wait.