Solving Polynomials Equations

Determine the total number of solutions (including complex and repeated) of the following equations.

1.) 4x^3 - 7x^2 + 5x - 9 = 0

2.) 8x^6 - 3x^4 - 11x^3 - 2x^2 + 4 = 0

3.) x^5 + 2x^3 - 4x^2 + 7x = 12

4.) -3x^4 + 2x^3 + 15x^2 - x + 1 = 8

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...ual to 1) has at least one complex root. It is equivalent to the statement that a polynomial P(z) of degree n has n values Zi such ...