Question

9 to the power x minus 1 is equal to 3 to the power 2 x minus 1 minus 486

Answer 1

9^x-1 = 3^2x-1 - 486
=9^x-1 - 3^2x-1 = -486
=3^2x-2 - 3^2x-1 = -486
=3^2x-2(1-3) = -486
=3^2x-2 × -2 = -486
=3^2x-2 = -486/-2
=3^2x-2 = 243
=3^2x-2 = 3^5
=2x-2 = 5
=2x = 5+2
=2x = 7
=x = 7/2

Answer 2

very very tough question