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* 4 3 5 2 Flo FO FB ABC Me OM 0 for the function f(x) = 3x* +8x®-18x² +5, find: The critical numbers. b. The open intervals w

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f(x) = 3x4_843-18x?ts f(x)= 12x} +243 -36 = 12x (x²+2x-3] = 12 *(x-1) (x+3) but f(x)=0 we get and x²+2x-3=0 x?+3x-x-3=0 x(x+3

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