Can you help me with my calculus problems?

Evaluate the quotient, and write the result in the form a + bi. (Simplify your answer completely.) (7 - 87)-1Find all solutions of the equation and express them in the form a + bi. (Enter your answers as a commaseparated list. Simplify your answer completely.) x2+3x+4=0 X Find all solutions of the equation and express them in the form a + bi. (Enter your answers as a comma-separated list. Simplify your answer completely.) 6X2+12x+7=0