Four polynomials are shown below: a. 4 − 7x5 + x2 b. 5x3 + 5 − 3x4 c. 3x + 2x4 − x2 + 6 d. 3x3 − 5 + 2x5 + x which of the above polynomials is a 4th degree trinomial? answers- polynomial a polynomial b polynomial c polynomial d

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.