Question

Me ajudem na 4 por favorr

Answer 1

Basta subtrair elemento por elemento.

$\left[\begin{array}{ccc}-1&2&4\end{array}\right] - \left[\begin{array}{ccc}-\frac{3}{2} &1&-2\end{array}\right]$

É igual a:

$\left[\begin{array}{ccc}(-1+\frac{3}{2})&(2-1)&(4+2)\end{array}\right] = \left[\begin{array}{ccc}\frac{1}{2}&1&6\end{array}\right]$