Réponses

2014-06-11T00:55:05+02:00
Bonsoir,

D=5x3x5x3x5x5x3x3x5x3/5x3x3x3x5x5x3x5x5x5

D=\dfrac{5\times5\times5\times5\times5\times3\times3\times3\times3\times3}{5\times5\times5\times5\times5\times5\times3\times3\times3\times3}\\\\D=\dfrac{5^5\times3^5}{5^6\times3^4}\\\\D=5^{5-6}\times3^{5-4}\\\\\boxed{D=5^{-1}\times3^{1}}

C= 2x2x7x7x7x2x2x2/2x2x7

C=\dfrac{2\times2\times2\times2\times2\times7\times7\times7}{2\times2\times7}\\\\C=\dfrac{2^5\times7^3}{2^2\times7^1}\\\\C=2^{5-2}\times7^{3-1}\\\\\boxed{C=2^{3}\times7^{2}}