Transcription of Laws of Exponents
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Laws of Exponents
PRIMARY CONTENT MODULE INUMBER SENSE: Exponents /Powers and RootsT-9 1999, CISC: Curriculum and Instruction Steering Committee The WINNING EQUATIONLaws of ExponentsAddition of ExponentsIf:a 0,a m a n = a m+nExample:23 22=(2 2 2) (2 2)=2 2 2 2 2=25=23+231 35=?PRIMARY CONTENT MODULE INUMBER SENSE: Exponents /Powers and RootsT-10 1999, CISC: Curriculum and Instruction Steering Committee The WINNING EQUATIONA nother Example For Negative Exponents2-3 2-2=123 122 ==123 22=123+2=125=2-5=2-3+-23-1 3-4=?PRIMARY CONTENT MODULE INUMBER SENSE: Exponents /Powers and RootsT-11 1999, CISC: Curriculum and Instruction Steering Committee The WINNING EQUATIONS till More Examples23 2-2=23+( 2)=21=2 Why?23 2-2=23 122=2322=2 2 22 2=2 22 2 2=1 2 = 2 = 21 PRIMARY CONTENT MODULE INUMBER SENSE: Exponents /Powers and RootsT-12 1999, CISC: Curriculum and Instruction Steering Committee The WINNING EQUATIONMore ExponentsIf a 0 aman = am-nExample:2723=2 2 2 2 2 2 22 2 2=2 2 22 2 2 2 2 2 2=1 24=24 (=16)So,2723=27-3 = 24 PRIMARY CONTENT MODULE INUMBER SE
• Square Root - a number that when multiplied by itself produces a given number. Example : 3 is a square root of 9.-3 is also a square root of 9. • Radical Sign The symbol for the positive square root. By convention, the radical sign, a designates only the positive square root. Radical Sign → 36 ← Radicand
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