Sagot :
A= (7^3 x 2^4 x 3^5) / (2^6 x 7^2 x 3^2) = 7^(3-2) x 2^(4-6) x 3^(5-2)
A= 7 x 2^(-2) x 3^3
B= [(3 x 5)^3 x 2^(-2)] / (3^6 x 11^(-3) x 5^2)
B= (3^3 x 5^3 x 2^(-2)) / (3^6 x 11^(-3) x 5^2)
B = 2^(-2) x 3^(3-6) x 5^(3-2) x 11^(-(-3))
B = 2^(-2) x 3^(-3) x 5 x 11^3
C= 10^7 / (2^5 x 5^4)
C= (2^7 x 5^7) / (2^5 x 5^4)
C= 2^(7-5) x 5^(7-4)
C= 2^2 x 5^3
D= [(11^3)^(-2) x 2^(-4)] / 26^(-5)
D = [11^(3x(-2)) x 2^(-4)] / (2 x 13)^(-5)
D = [11^(-6) x 2^(-4)] / (2^(-5) x 13^(-5))
D= 11^(-6) x 2^(-4-(-5)) x 13^(-(-5))
D= 11^(-6) x 2 x 13^5
j'espère avoir aidé