Answer:
Step-by-step explanation:
When you take the square root of a negative number such as √(−49) you get an answer of ±7i. The reason is that −49 = −1*49.
Hope this helps!
B
imaginary number (the number doesn't exist)
all square root has positive number inside the sign, but if the number is negative, we call it imaginary
√-1 = i
so i x i = -1
then
√-49 = √-1 * √49 = i * 7 = 7i
