Jabarkan dan Sederhanakan:
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![( x - \frac{1}{x} )^{2} - ( x + \frac{1}{x} )^{2} \\ \\ =[x^2-2+ \frac{1}{x^2}]-[ x^2+2+ \frac{1}{x^2}] \\ \\ =-4](https://tex.z-dn.net/?f=%28+x+-+%5Cfrac%7B1%7D%7Bx%7D+%29%5E%7B2%7D+-+%28+x+%2B+%5Cfrac%7B1%7D%7Bx%7D+%29%5E%7B2%7D++%5C%5C++%5C%5C+%3D%5Bx%5E2-2%2B+%5Cfrac%7B1%7D%7Bx%5E2%7D%5D-%5B+x%5E2%2B2%2B+%5Cfrac%7B1%7D%7Bx%5E2%7D%5D+%5C%5C++%5C%5C+%3D-4 "( x - \frac{1}{x} )^{2} - ( x + \frac{1}{x} )^{2} \\ \\ =[x^2-2+ \frac{1}{x^2}]-[ x^2+2+ \frac{1}{x^2}] \\ \\ =-4")
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