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Can somebody help me differentiate f(x)= (-x^2-1)/(x^2-1)^2 and get the answer as f''(x)= (2x^3 +6x)/(x^2-1)^3? What states border Florida? At 10∘C , the ion product of water is 2.93×10−15 . What is the concentration of hydroxide ions at this temperature? The evening wind was crying in our room in September in the rain? How many times can 20 go into 183?