Q. Express the radical using the imaginary unit, i.Express your answer in simplified form.±−35=±
Recognizing the imaginary unit: First, we recognize that the square root of a negative number involves the imaginary unit i, where i2=−1. We can rewrite the expression ±−35 by factoring out −1 from under the radical to separate the real and imaginary parts.±−35=±−1⋅35
Replacing −1 with i: Next, we know that −1 is the definition of the imaginary unit i. So we can replace −1 with i and continue simplifying the expression.±−1×35=±i×35
Simplifying the expression: Since 35 is a product of 5 and 7, and neither 5 nor 7 has a square root that is an integer, we cannot simplify the radical any further. Therefore, the expression is already in its simplest form.±i⋅35=±i35
More problems from Introduction to complex numbers