This equation is incorrect. The correct identity should be:
sin^4x + cos^4x = (sin^2x + cos^2x)^2 - 2sin^2x*cos^2x
When simplifying, we get:
sin^4x + cos^4x = 1 - 2sin^2x*cos^2x
So, the correct identity is:
This equation is incorrect. The correct identity should be:
sin^4x + cos^4x = (sin^2x + cos^2x)^2 - 2sin^2x*cos^2x
When simplifying, we get:
sin^4x + cos^4x = 1 - 2sin^2x*cos^2x
So, the correct identity is:
sin^4x + cos^4x = 1 - 2sin^2x*cos^2x