sin(−x)sec(−x)\sin\left(-x\right)\sec\left(-x\right)sin(−x)sec(−x)
sec2x+1\sqrt{\sec^2x+1}sec2x+1
2x4 + 6y22x^4\:+\:6y^22x4+6y2
tan(x)1+sec(x)=1+sec(x)tan(x)\frac{\tan\left(x\right)}{1+\sec\left(x\right)}=\frac{1+\sec\left(x\right)}{\tan\left(x\right)}1+sec(x)tan(x)=tan(x)1+sec(x)
y8−2y4z3+z6y^8-2y^4z^3+z^6y8−2y4z3+z6
(x+y)(x−y)(x+y)+y−x2\left(\sqrt{x+\sqrt{y}}\right)\left(\sqrt{x-\sqrt{y}}\right)\left(\sqrt{x+y}\right)+y-x^2(x+y)(x−y)(x+y)+y−x2
a3−a+a2−1a^3-a+a^2-1a3−a+a2−1
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