Subtract (3.4+−25−−−−√)−(−9−−9−−−√) . Provide your answer in the form of a+bi.
To subtract the given expression, we can use the rules of complex numbers.
First, let's simplify the square roots:
√25 = 5
√9 = 3
Now, we can rewrite the expression as:
(3.4 + i5) - (-9 + i3)
When subtracting complex numbers, we can distribute the negative sign:
3.4 + i5 + 9 - i3
Combining like terms:
(3.4 - 9) + (i5 - i3)
Simplifying further:
-5 + i2
Therefore, the answer is -5 + 2i.