SOLUTION: x to the fourth power plus 3x squared minus 10

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Question 214312: x to the fourth power plus 3x squared minus 10
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
'Twould help a lot if you were to explain what would like done to this expression!
x%5E4%2B3x%5E2-10
If you want to solve for x, then you have to make an equation out this expression by setting it equal to something.
For example, you could solve for x if you set the expression equal to zero, say.
x%5E4%2B3x%5E2-10+=+0 Group the x-terms as shown:
%28x%5E2%29%5E2%2B3%28x%5E2%29+-+10+=+0 Now factor this:
%28x%5E2-2%29%28x%5E2%2B5%29+=+0 which means that:
x%5E2+=+2 or x%5E2+=+-5 so that:
x+=+sqrt%282%29 or x+=+-sqrt%282%29 or x+=+sqrt%28-5%29 or x+=+-sqrt%28-5%29