- Prove the equtaion x^7-3x^4-4x^2+x-1=0 can't have more than 3 real roots.?

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How do I find the volume of an inverted cone? The diameter is 6 in and the slant height is 6 in.? Calculate enthalpy for the following reaction A) Ca0(s) + 2HCl(g) => CaCl2(s) + H2O(g) B) 4FeO(s) +O2(g) => 2Fe203(s)? Simplify (1-a/a) / (a-1) its suppose to be -1/a but I don t know how to get there. Please show steps? Solve the given initial-value problem. The DE is homogeneous? Should the UK leave Europe?

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