Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$6x=32\ \cos^{6}x-48\ \cos^{4}x+18\ \cos^{2}x-1$$

Solve for x (complex solution)

$x\in \mathrm{C}$

Solve for x

$x\in \mathrm{R}$

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