Complete the following exercise:40⋅2= 40\cdot2= 40⋅2=
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:
+40×+2=+80 +40\times+2=+80 +40×+2=+80
80