Cos^4(x)-sin^4(x)=

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Solution for Cos^4(x)-sin^4(x)= equation: 


Simplifying
Cos4(x) + -1sin4(x) = 0

Multiply os4C * x
os4xC + -1sin4(x) = 0

Multiply in4s * x
os4xC + -1in4sx = 0

Reorder the terms:
-1in4sx + os4xC = 0

Solving
-1in4sx + os4xC = 0

Solving for variable 'i'.

Move all terms containing i to the left, all other terms to the right.

Add '-1os4xC' to each side of the equation.
-1in4sx + os4xC + -1os4xC = 0 + -1os4xC

Combine like terms: os4xC + -1os4xC = 0
-1in4sx + 0 = 0 + -1os4xC
-1in4sx = 0 + -1os4xC
Remove the zero:
-1in4sx = -1os4xC

Divide each side by '-1n4sx'.
i = n-4os3C

Simplifying
i = n-4os3C

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