Question

help! find the solutions

x^4+25x^2+144=0

Answer 1

Factor.

Answer 2

$$
x^4+\color{blue}{25^2}+144=0?\\
\text{are you sure it isn't}\\
x^4+\color{blue}{24^2}+144=0
$$

Answer 3

$$
x^4+\color{blue}{25x^2}+144=0?\\
\text{are you sure it isn't}\\
x^4+\color{blue}{24x^2}+144=0
$$
rather :/

Answer 4

?

Answer 5

your equation, that is :)

Answer 6

It doesn't have to be. There's a factorization that works.

Answer 7

well, true, doesn't have to be a perfect trinomial, ok

Answer 8

just wondering :)

Answer 9

It's actually much better the way it factors, you don't end up with sqrt(12)