Find the 7 th term of the geometric sequence shown below.
\[
-3 x^{6}, 12 x^{8},-48 x^{10}, \ldots
\]
So, the 7th term of the geometric sequence is \(\boxed{-12288x^{18}}\).
Step 1 :First, we need to find the common ratio of the geometric sequence. We can do this by dividing the second term by the first term, which gives us \(-\frac{12x^8}{-3x^6}= -4x^2\).
Step 2 :Then, we can find the 7th term by multiplying the first term by the common ratio raised to the power of 6 (since the 7th term is 6 terms away from the first term). This gives us \(-3x^6 \times (-4x^2)^6\).
Step 3 :Calculating the above expression, we get \(-3x^6 \times 4096x^{12} = -12288x^{18}\).
Step 4 :So, the 7th term of the geometric sequence is \(\boxed{-12288x^{18}}\).