Please help? Idk how to solve this :\ can someone show me how?
I got 2 - ? + ? so far.

Evaluate x^1 - x^-1 + x^0 for x = 2.

Question

Please help? Idk how to solve this :\ can someone show me how?
I got  2 - ? + ?  so far.

Evaluate x^1 - x^-1 + x^0 for x = 2.

mathmale · Answer

Assuming that I'm interpreting your question correctly, its form is $$x-x ^{-1} + x ^{0}.$$
Note that x^0 = 1.

Substituting 2 for x and x^(-1), we get
$$(2) + (2)^{-1 }+1=?$$

Please present your questions using the Equation Editor if you can; it's so much clearer and easier to read.

anonymous · Answer

Oh ok, sorry my equation editor isn't working correctly.And yes you are right on how I meant the equation to be interpreted. I have a question though. Is any number to the zero power 1? and is the solution 3.5?

mathmale · Answer

Yes to both questions!  Good going.

anonymous · Answer

Haha, thanks! I am in cyber school and I haven't got a grip on the negative exponents and zero power yet but now I think I know :) Thank you again!

mathmale · Answer

My great pleasure!  C u again on OpenStudy.