- How do I solve "Find the sum of the solutions to the equation x^2-7x-8=0"?

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Fdgffdgdfgdfgdfgdfgdf? (2y^7/9)^-3=? Calculate the integral, if it converges. If it diverges, enter diverges for your answer.
-infinity to 1 of ∫e^5x/1+e^5xdx? Can somebody tell me how to integrate (x^3)/(x^2+4)^1/2 dx using trig substitution? What impacts the magnitude of difference in chemical shift between diastereotopic hydrogens?