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?
• 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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