What will be the sign of the result of the next exercise?
(−2)⋅(−12)= (-2)\cdot(-\frac{1}{2})= (−2)⋅(−21)=
Let's recall the law:
(−x)×(−x)=+x (-x)\times(-x)=+x (−x)×(−x)=+x
Therefore, the sign of the exercise result will be positive:
−2×−12=+1 -2\times-\frac{1}{2}=+1 −2×−21=+1
Positive