Q. Simplify −27. If the answer is radical use 5 to denote 5 (use the correct radicand in the problem) If the answer is complex use i.
Identify Number and Sign: Identify the number inside the square root and its sign.The number inside the square root is −27, which is a negative number.
Use Imaginary Unit: Recognize that the square root of a negative number involves the imaginary unit i. The square root of a negative number is not a real number. It can be expressed using the imaginary unit i, where i is defined as −1.
Factorize −27: Factor −27 into −1 and 27 to separate the negative sign from the positive part.−27 can be written as (−1)×27.
Apply Square Root Separately: Apply the square root to both factors separately. −27 can be written as −1×27.
Simplify −1: Simplify the square root of −1 to i.−1 is equal to i.
Simplify 27: Simplify the square root of 27.27 is 33, so 27 is 32×3 which simplifies to 3×3.
Combine Results: Combine the results from Step 5 and Step 6.The simplified form of −27 is i×3×3.