So we have x^2 + 3*x = 180 --> x^2 + 3*x - 180 = 0. This can factor into (x-12)(x+15)=0, So x = -15 or x = 12 satisfies it: -15 is the answer. I factored by looking for factors which sum to +3 and multiply to -180
No, it is not even a real number. The square root of negative 5 is the square root of 5, times i.
-2
well a positive times a negative equals a negative so if the problem was -8 times 9 it would equal -72
Yes, and also a negative integer divided by a negative integer is equal to a positive number (but not necessarily an integer).
positive times negative equals negative. positive times positive equals positive. negative times negative equals positive
A negative integer. Every time.
Negative times positive equals negative.
positive times negative equals negative
Integer Rules
No, it is not even a real number. The square root of negative 5 is the square root of 5, times i.
-2
well a positive times a negative equals a negative so if the problem was -8 times 9 it would equal -72
positive
Yes, and also a negative integer divided by a negative integer is equal to a positive number (but not necessarily an integer).
positive times negative equals negative. positive times positive equals positive. negative times negative equals positive
Negative, as for example: 5 times -4 = -20
Let's use N to represent any number.N x N = NN x -N = -N-N x -N = NSo the rules are:A positive integer times a positive integer will be a positive integerA positive integer times a negative integer will be a negative integerA negative integer times a negative integer will be a positive integer.