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EPHTAMINA890

(6^5×6^8)/6^4

=6^(5+8)/6^4

=6^13/6^4

=6^(13-4)

=6^9

(3^7×3^(-3))/3^6

=3^(7-3)/3^6

=3^4/3^6

=3^(4-6)

=3^-2

(3^2)^6/3^5

=3^(2×6)/3^5

=3^12/3^5

=3^(12-5)

=3^7

(7^-3)^5/7^4

=7^(-3×5)/7^4

=7^-15/7^4

=7^(-14+4)

=7^(-10)

(5^17×5^23)/(5^1×5^8)

=5^(17+23)/5^(1+8)

=5^40/5^9

=5^(40-9)

=5^31

(11^8×11^-2)/(11^-7×11^4)

=11^(8-2)/11^(-7+4)

=11^6/11^-3

=11^(6-(-3)

=11^(6+3)

=11^9

10^11×10^-2×10^5

=10^(11-2+5)

=10^14

(10^10×10^-7)/10^5

=10^(10-7)/10^5

=10^3/10^5

=10^(3-5)

=10^(-2)

(10^3×10^-4)/(10^5×10^-7)

=10^(3-4)/10^(5-7)

=10^-1/10^-2

=10^(-1-(-2))

=10^(-1+2)

=10^1

=10

Réponse:

voir la feuille jointe

multiplication de nbres à puissances = addition des puissances

division de nbres à puissances = soustraction des puissances

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