Math Question
![Factor the following expression.
\[
x^{4}-3 x^{2}-4
\]
First, enter the number that is closest to zero.
\[
\left(x^{2}+[?]\right)\left(x^{2}-\square\right)
\]
Notice that the signs are already entered](https://d3hlidq5bf9vg0.cloudfront.net/app-server-student/2022/1/12/f7f1787a-09d8-41aa-89c2-e0f745e276c3.png "Factor the following expression.
\[
x^{4}-3 x^{2}-4
\]
First, enter the number that is closest to zero.
\[
\left(x^{2}+[?]\right)\left(x^{2}-\square\right)
\]
Notice that the signs are already entered")
Solution
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