Find the values of complex number ਦੇ + √2 333

Z is a complex number

4. Preform the following operations and express the answer as a complex numbers. a) (15 – 2i) – (6 + 5i) - b) (3+ 4i)(10 – i)

State the number of complex roots, the possible number of real and imaginary roots, thepossible rational roots, and an interval in which all real roots lie for each equation. Then findall roots. x^2+ 6x+ 8 = 0    x^3+ 64 = 0