Simplify
\[\frac{\sin^4 x + \cos^4 x - 1}{\sin^6 x + \cos^6 x - 1}.\]
Question:
Simplify
\[\frac{\sin^4 x + \cos^4 x - 1}{\sin^6 x + \cos^6 x - 1}.\]
Answer:
Let's think step by step.

user
\frac{2}{3}
Simplify
\[\frac{\sin^4 x + \cos^4 x - 1}{\sin^6 x + \cos^6 x - 1}.\]
train