18 17
9
​
+(−18
17
9
​
)minus, 18, start fraction, 9, divided by, 17, end fraction, plus, left parenthesis, minus, 18, start fraction, 9, divided by, 17, end fraction, right parenthesis?

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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.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square