Trigonometry
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Rewrite the following trigonometric expression by factoring it completely:
(sinx+cscx)2−(sinx−cscx)2\left(\sin x+\csc x\right)^2-\left(\sin x-\csc x\right)^2(sinx+cscx)2−(sinx−cscx)2
2sin2x+2csc2x+42\sin^2x+2\csc^2x+42sin2x+2csc2x+4
2sin2x+2csc2x−42\sin^2x+2\csc^2x-42sin2x+2csc2x−4
444
−4-4−4