-2 or negative 2
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divide by 3. (x+2) (x-2) = 0 set both equal to 0 x= -2 and x= 2
Negative plus a negative is a negative. Ex. -1+-1=-2 Negative times a negative is a positive. -2*-2=4 But a negative [minus] plus a positive [plus] can be minus, zero or plus: For example, -3 + 2 = -1 -3 + 3 = 0 -3 + 4 = +1
6-2 = 4
No. 7b - 2b = 5b
if a positive number minus a negative number, the minus turns to a plus sign. so its positive Ex. 2- -4= 2+4=6