$3478-1441$

$4x^2-12x+97$

$\frac{x^4-2x^2+1}{\frac{x}{2}+1}$

$\frac{5a^{-3}b^2}{10}\cdot\frac{2a^3b^{-3}}{15ab^{-4}}$

$\frac{sin\left(x\right)}{\cos\left(x\right)}+\frac{sin^2\left(x\right)}{1+\sin\left(x\right)}=\tan\left(x\right)$

$3+\left|-4\right|+\left(-10\right)+\left|-15\right|$

$\left(\frac{2}{2}\right)^2$