3, -15
-3 and 6
21
There are no 'real' numbers that can do that. The numbers are 3 + j sqrt(3) and 3 - j sqrt(3). ( ' j ' is the square root of negative 1 )
Because two negative multiplied together equal a positive. So after the first multiplication we have a positive and a negative. When we multiply these we have a negative.
3, -15
-3 and 6
0 and -3, added together.
21
There are no 'real' numbers that can do that. The numbers are 3 + j sqrt(3) and 3 - j sqrt(3). ( ' j ' is the square root of negative 1 )
Because two negative multiplied together equal a positive. So after the first multiplication we have a positive and a negative. When we multiply these we have a negative.
Many different sums can equal negative 2, one of them being a negative number larger by 2 than a positive number. Examples: -2 and 0 -3 and 1 -4 and 2 -5 and 3
To get a negative number when multiplying, that means you are multiplying a positive number by a negative number:1 x -3=-3or-1 x 3=-3
Never. The sum of two negative numbers is a negative number with a value less than either of them, e.g. (-1) + (-2) = (-3) Adding two negative numbers is the same as adding their positive absolute values, and expressing the sum as a negative. If the two negative numbers are the same, and you subtract one from the other, the result is 0. e.g. (-2) - (-2) is the same as (-2) + 2 , which equals 0.
7
The result can be either positive or negative, depending on the sizes of those original two negative numbers. (-8) minus (-10) = positive 2 (-8) minus (-5) = negative 3
-3 and 1