Question

Given 4725= 3^a 5^ b 7^c, find (i) the integral values of a,b and c (ii) the value of 2^-a 3^b 7^ c

Answer 1

Step-by-step explanation:

1 4725 =3^2×5^2×7= 3^a×5^b7^c

a=3 b=2 c=1

2= 2^_a ×3^b×7^c 2^_3×3^2×7^1=3^2×6/2^3=9×7/7= 63/8