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If a^= b+c, b^2= c+a and c^2= a+b then find the value of 1/(a+1) + 1/(b+1) + 1/(c+1)=? Let x be a whole number. The remainder is 3 if x is divided by 7. What is the remainder if 3x is divided by 7? If f(x) = -x³ + x² + x, find f(-2)? Can someone help identify this strange bug thing for a friend? What would the corresponding concentration values of OH - be for the pH values: 1, 3, 5, 7, 9, 11?