- For what values of k is 9x^2+kx+16 is a perfect square?

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Find the antiderivative F of f(x) = 4−3(1+x^(2))^(−1) that satisfies F(1) = −8. F(x) = ? What is t in this problem, t/8 = -4? Why are numbers divided into 10 digits... why isn’t there an “11th” digit with only 1 digit for representation, not 2? 2x^2+8y=121.5? Combustion of C2H4O2(l) has a ΔHrxn value of –786.3 kJ.What is the enthalpy change when 197 g of H2O(g) is produced?