Esim. 1

Polynomien [[$2x+1$]] ja [[$x-2$]] summa on[[$$ \begin{align} (2x+1)+(x-2) &= 2x+1+x-2\\ &=2x+x+1-2\\ &= 3x - 1 \end{align} $$]]​

Esim. 2

Polynomien [[$2x+1$]] ja [[$x-2$]] erotus on [[$$ \begin{align} (2x+1)-(x-2) &= 2x+1-x+2\\ &=2x-x+1+2\\ &= x + 3 \end{align} $$]]​