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第27頁

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?$ ={({a}^{1+2+m})}^2$?
?$ ={a}^{2(3+m)}$?
?$ ={a}^{6+2m}$?
?$ =(-\frac 12)^5x^{2×5}y^5$?
?$ =-\frac 1{32}x^{10}y^5$?
?$ ={-a}^6\cdot {a}^{10}$?
?$ ={-a}^{16}$?
?$ ={({a}^3^6)}^4$?
?$ ={a}^{12}^{24}$?
?$ ={x}^8+{x}^8-9{x}^8$?
?$ =-7{x}^8$?
?$ ={(x+2y)}^8\cdot {(x+2y)}^2$?
?$ ={(x+2y)}^{10}$?
?$ y^4$?
?$ -\frac 12a^3b$?
?$ ab$?
?$ a^m$?
?$ ={(-\frac {1} {8})}^5×4^{10}$?
?$ ={(-2^{-3})}^5×{(2^2)}^{10}$?
?$ =-2^{-15}×2^{20}$?
?$ ={-2}^5$?
?$ =-32$?
?$ ={(\frac {7} {3})}^{2000}×{(\frac {3} {7})}^{2000}×{(\frac {3} {7})}^2$?
?$ ={(\frac {7} {3}×\frac {3} {7})}^{2000}×{(\frac {3} {7})}^2$?
?$ =\frac {9} {49}$?
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