$\left(5+i\right)\left(5-i\right)$
$0.0125^{20}$
$2-\cot^2a=3-\csc^2a$
$\frac{cotx}{secx}=cscx\:-\:sinx$
$\left(\frac{a}{7}-\frac{b}{2}\right)^2$
$\frac{60x^{7\:}b^2}{-45x^2b^7}$
$31+14.76$
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