− 169 → − / + 13 i
Square root -169 = − 169 = 169 * − 1 = 13*i = 13i.
Note square root of -1 is represented by i.
Square roots usually have two answers; +/- More correct answer = +/- 13i
The square root of -169 is expressed using imaginary numbers as 13 i . This is because the square root of -1 is defined as i , so we write − 169 = 13 × i . Imaginary numbers are essential for working with negative square roots in mathematics.
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