$\left(1+\tan^2\left(5\right)\right)\cos^2\left(5\right)=1$
$\frac{12}{5}-\frac{2}{5}$
$\frac{1}{n}x^{2n}$
$-5.-12,5-3.5+4.-1$
$\frac{2^{x+1}\cdot\:\:\:\:\:5^{x+1}-2^x\cdot\:\:\:\:\:5^x}{2^3\cdot\:\:5^x+5^x}$
$3+48+1+8$
$\left(5x^4+8y^4\right)^2$
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