Potenser

Yosef skrev :

$$\begin{gathered} 2a^2{b}^2=a^2{b}^2+a^2{b}^2 \\ hur kan man skriva om 2a^{2}2b^2? \end{gathered}$$

$2a^{2}2b^2=2\cdot 2\cdot a^{2}b^2=2^2a^2b^2=(2ab)^2$

Eller

$2a^{2}2b^2=2\cdot 2\cdot a^{2}b^2=4a^2b^2$

Eller

$2a^{2}2b^2=2\cdot 2\cdot a^{2}b^2=a^2b^2+a^2b^2+a^2b^2+a^2b^2$