rewrite the expression in terms of the first power of cos

sin^2xcos^2x

To rewrite the expression sin^2x cos^2x in terms of the first power of cos, we can use the trigonometric identity:

sin^2x = 1 - cos^2x

So, substituting this into the expression, we get:

(1 - cos^2x)cos^2x

Expanding this expression further:

cos^2x - cos^4x

Therefore, the given expression sin^2x cos^2x can be rewritten as cos^2x - cos^4x.