0 - 0 - 3 = -3
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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
b^3 - 25b^2 - 4b + 100 = 0 b = 25 or b = -2
-3 minus 11=-3+-11=-14
9x squared plus 16 = 0 factored is plus and minus 4/3 i.
12b2 - 8b = 0 4b(3b-2) = 0 4b = 0 and 3b-2 = 0 4b = 0 and 3b = 2 b = 0 and 2/3