Question
If $a = -2, b = -1,$ than $ab - ba$ is equal to:
✓
Answer
$a^b - b^a$
$= (-2)^{-1} (-1)^{-2}$
$=\frac{1}{(-2)}-\frac{1}{(-1)^2}$
$=\frac{-1}{2}-1$
$=\frac{-3}{2}$
$=-1.5$
$= (-2)^{-1} (-1)^{-2}$
$=\frac{1}{(-2)}-\frac{1}{(-1)^2}$
$=\frac{-1}{2}-1$
$=\frac{-3}{2}$
$=-1.5$
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