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oussamabbz
@oussamabbz
January 2021
1
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mettre les expression sous la forme (A puissance N) en utillisent les propriete des puissance de maniere astucieuse/:
A: 2(puissance2)x8(puissance -4)
B:9x3(puissance4)
------------------------
3(puissance2)x27
C:3(puissance2)x7(puissance4)
-----------------------------------------
3(puissance5)x21(puissance4)
s'il vous plait , pouvais vous m'aidée le plus vite possible car mon DM est pour demain???
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AhYan
A: 2^2*8^(-4) = 8^1*8^(-4)=8^(-3)=(2^2)^(-3)=2^(-6)
B:(9*3^4)/(3^2)27 = (3^2*3^4)/(3^2*3*3) = 3^6/3^5=3^1=3
C:(3^2x7^4)/(3^5x21^4) = (3^2x7^4)/(3^5*7^4*3^4) = (3^2x7^4)/(3^9*7^4) =3^(-7)
2 votes
Thanks 1
oussamabbz
mrc beaucoup
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oussamabbz
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B:(9*3^4)/(3^2)27 = (3^2*3^4)/(3^2*3*3) = 3^6/3^5=3^1=3
C:(3^2x7^4)/(3^5x21^4) = (3^2x7^4)/(3^5*7^4*3^4) = (3^2x7^4)/(3^9*7^4) =3^(-7)