Question

X if : 9ˣ x 9² = 6480+ 9ˣ.

Answer 1

Answer:

$9 {}^{x } \times 9 {}^{2} = 6480 + 9 {}^{x} \\ 9 {}^{x} \times 9 {}^{2} - 9 {}^{x } = 6480 \\ 9 {}^{x} (81 - 1) = 6480 \\ 9 {}^{x } = 6480 \div 80 \\ 9 {}^{x} = 81 \\ x = 2$

this is the solution....