$t^2x'+tx=1,\:x\left(1\right)=0$
$4\cdot\left(1\right)-\left(1\right)-\left(1\right)$
$\frac{\left(\left(-1\right)^nx^n\right)}{11^n\left(n^2+2\right)}$
$254-148.56$
$\left(3x+5z+4y\right)^2$
$\sqrt[3]{8x^3y^5}$
$\left(\frac{-2}{-5}\right)^{-4}+\left(\frac{-3}{-4}\right)^{-3}$
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