Algebra-1

To find the common ratio (r) of a geometric sequence, we divide each term in the sequence by its preceding term. Let's calculate the ratios:
$$\frac {1} {{x}^{2}}\div \frac {1} {x}=\frac {1} {{x}^{2}}\times \frac {x} {1}=\frac {x} {{x}^{2}}=\frac {1} {x}$$
$$\frac {1} {{x}^{3}}\div \frac {1} {{x}^{2}}=\frac {...