How do you verify #4tan^4 + tan^2x-3 = sec^2x (4tan^2x - 3)#? kinda hard please with all the steps thanks!?

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Answer 1 · 2015-04-26T01:02:30

Have a look and see if it is understandable:
enter image source here
I also used the fact that #sin^2(x)+cos^2(x)=1#