Question

9x^4+4=13x^2
Solve

Answer 1

what is this, a human calculator?

Answer 2

Yes. I didn't know how else to put it in but I can change if necessary.

Answer 3

what is it you have problems with in particular?

Answer 4

The problem is asking me to solve it. \[\pm1, and the other should be \pm2/3 but I am getting \pm1, \pm4/9\]

Answer 5

Step 1: go to http://www.wolframalpha.com

Step 2: type
solve 9x^4+4=13x^2

Step 3: click "show steps". :)

Answer 6

If you have any questions about WA's solutions, just ask away. :)

Answer 7

Haha, you don't need a human calculator when there is wolframalpha

Answer 8

Wolfram alpha can compute and calculate, but it cannot interpret or make meaning... that is something only the human mind can do. Use WA to learn and check your answers, but makes sure your brain can do the work or it will grow weak. :)