Question

Solve the inequality :(

Answer 1

\[x^4-32x^2-144>0\]

Answer 2

I don't even know where to start..

Answer 3

let t = x^2 to take it down

Answer 4

Is that substituting?

Answer 5

yup

Answer 6

What do we do with it? :s

Answer 7

do it first and I guide you more.

Answer 8

\[t^2-3xt-144>0\]

Answer 9

t^2 -32t -144 >0

Answer 10

Oh yeah typo

Answer 11

ok, now solve for quadratic to get t

Answer 12

um for x do I change it to t?

Answer 13

we will be back to x later. Now, just solve for t

Answer 14

for a i just put t? it looks weird lol