Trigonometry
Rewrite the following trigonometric expression by factoring it completely:
tan4x+6tan2x+5\tan^4x+6\tan^2x+5tan4x+6tan2x+5
(tan2x+5)(tan2x+1)\left(\tan^2x+5\right)\left(\tan^2x+1\right)(tan2x+5)(tan2x+1)
(tan2x−5)(tan2x+1)\left(\tan^2x-5\right)\left(\tan^2x+1\right)(tan2x−5)(tan2x+1)
(tan2x+5)(tan2x−1)\left(\tan^2x+5\right)\left(\tan^2x-1\right)(tan2x+5)(tan2x−1)
(tan2x−5)(tan2x−1)\left(\tan^2x-5\right)\left(\tan^2x-1\right)(tan2x−5)(tan2x−1)