Question

If (5) power x-3multiplied by (3)power 2x -8=225,find x

Answer 1

Solution:

5^x-3 . 3^2x-8 =255 =3×75 =3

×3×25 =3×3×5×5 :. 5^x-3 . 3^2×8 =

5^2 × 3^2 comparing both the sides we get x-3 =

2 => x=5 ( you can compare even the other one also. The result will be same )