\u00a9 2020 wikiHow, Inc. All rights reserved. X^-Y = 1/X^Y. Example: Instead of […] This is found in most word processing and Internet programs that allow the typist to put in different and special characters. Negative exponents can be written as 2−2,(2−2)1,1(22),{\displaystyle 2^{-2},{\frac {(2^{-2})}{1}},{\frac {1}{(2^{2})}},} or 12x2{\displaystyle {\frac {1}{2x2}}}. This process is known as the negative exponent rule. I've been using the ^ key for exponents. Quote of the day ... Show me Another Quote! In words: 8 2 could be called "8 to the power 2" or "8 to the second power", or simply "8 squared" . a n × a m = a (n+m) EX: 2 2 × 2 4 = 4 × 16 = 64 2 2 × 2 4 = 2 (2 + 4) = 2 6 = 64 When an exponent is negative, the negative sign is removed by reciprocating the base and raising it to the positive exponent. Because the exponent is negative, the subtraction will cancel out the second negative and make the exponent positive. The problems in this lesson involve zero and negative exponents. In 8 2 the "2" says to use 8 twice in a multiplication, so 8 2 = 8 × 8 = 64. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. The button to calculate subtraction or to start a negative integer. The Calculator app on your iPhone is really two calculators: a basic four-function calculator that you use for addition, subtraction, multiplication, and division, and a scientific calculator that is capable of performing trigonometric calculations, logarithms, square roots, and percentages. 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