Show that 0.81 reocurring = 9/11
Let x = 0.8181818181...
100x = 81.81818181...100x - x = 81.81818181... - 0.8181818181(100 - 1)x = 8199x = 81x = 81/99x = 9/11
ED
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Solve the following quadratic equation.
When will I ever need to use this in real life?