Answers created by Raiyan

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• How do you write #f(x)= -2x^2+6x+2# in vertex form?
  
• I accidentally mixed CaOH, potassium permanganate, HCl, HNO3, NH4Cl, CuSO4, NaOH, NaHCO3. and a green liquid with yellow bubbles and a deep blue substance was formed. I want to know the reactions that actually happened and what are the substances?