- Find d derivative of y=x^3 -2x. using first principle?

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NaClO +NaCl +H2SO4? Without graphing, determine the number of solutions of a system? Could you show me how to work this problem? The midpoint of the segment with endpoints A(6, -4) and B(2, y) is (4, 1). What is the value of y? How many moles of sodium are necessary to synthesize 0.6 mol of sodium sulfide ?