x2+3x+3x^2+3x+3x2+3x+3
−1=tan2(x)−sec2(x)-1=\tan^2\left(x\right)-sec^2\left(x\right)−1=tan2(x)−sec2(x)
3x2+x−10=03x^2+x-10=03x2+x−10=0
4x3−17x2−16x+54x^3-17x^2-16x+54x3−17x2−16x+5
xx4+4\frac{x}{\sqrt{x^4+4}}x4+4x
x12−81x2−3\frac{x^{12}-81}{x^2-3}x2−3x12−81
1−(cos2(x)1+sen(x))=sen(x)1-\left(\frac{cos^2\left(x\right)}{1+sen\left(x\right)}\right)=sen\left(x\right)1−(1+sen(x)cos2(x))=sen(x)
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