Review of Introductory Mathematics EXPONENTSEXPONENTSThis chapter covers the addition, subtraction, multiplication, and division ofnumbers with exponents.EO 1.12 APPLY one of the arithmetic operations of addition,subtraction, multiplication, and division using exponentialnumbers.CalculatorUsage,SpecialKeysExponent keyRaising a number to an exponent requires the yx key to be pressed twice. First,the base number is entered and the yx key is pressed; this enters the base number(y). Next, the exponent number is pressed and the yx key is pressed; this entersthe exponent and tells the calculator to complete the calculation. The calculatorwill display the value.x squared keyPressing this key squares the displayed number. This key will save time overusing the yx key.ExponentsThe product a x a x a x a can be written as a4, where 4 is called the exponent of a or powerto which a is raised. In this notation, a is often called the base.Examples:a4aaaa53555(ab)5(a b)(a b)(a b)(a b)(a b)When an exponent is not written, it is assumed to be 1. For example, a1= a. An exponentapplies only to the quantity immediately to the left and below it. For example, in 3 + (-2)3thebase is -2, but in 3 - 23 the base is 2.Rev. 0 Page 61 MA-01
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