Simplifying

on3winyoureyes

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Joined
Jan 20, 2015
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sin2xcos2x-cos2x

Work:
I factored it
(cos2x )(sin2x-1)
then I think sin2x-1 could turn into an identity maybe but I'm not sure how to go about that or cos2 could turn into 1-sin2x and we multiply sin2x-1 and that
 
sin2xcos2x-cos2x

Work:
I factored it
(cos2x )(sin2x-1)
then I think sin2x-1 could turn into an identity maybe but I'm not sure how to go about that or cos2 could turn into 1-sin2x and we multiply sin2x-1 and that

sin2(x) -1 = ??? (an identity)
 
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