Question

solve and simplify 9^15 × 1/9^15

Answer 1

We have

$9^{15}\cdot\frac{1}{9^{15}}=\frac{9^{15}}{9^{15}}$

Now we have to remember that

$\frac{a^m}{a^n}=a^{m-n}$

then, in our case

$9^{15}\cdot\frac{1}{9^{15}}^{}=\frac{9^{15}}{9^{15}}=9^{15-15}=9^0=1$

Then the answer is 1.