How to determine real and complex numbers

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.

answer:  

123455421

step-by-step explanation: easy

a negative exponent is translated as follows:

so, we have