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f(x) = 8 cos^4 x + 6sin(2x + 3pi/4)sin(2x - pi/4)$$f(x) = 8 \cos^4 x + 6 \sin (2x + 3 \pi/4) \sin(2x - \pi/4)$$.

How can I simplify into a linear combination of simple sine functions?

f(x) = 8 cos^4 x + 6sin(2x + 3pi/4)sin(2x - pi/4)

How can I simplify into a linear combination of simple sine functions?

$$f(x) = 8 \cos^4 x + 6 \sin (2x + 3 \pi/4) \sin(2x - \pi/4)$$.

How can I simplify into a linear combination of simple sine functions?

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# Convert this function using trig identities into sine functions

f(x) = 8 cos^4 x + 6sin(2x + 3pi/4)sin(2x - pi/4)

How can I simplify into a linear combination of simple sine functions?