Simplify The Following Expression: $\[\sqrt{-16}+\sqrt{-25}+5\\]A. \[$5 + 9i\$\] B. \[$14 + 0i\$\] C. \[$5 + \sqrt{41i}\$\] D. \[$9 - 5i\$\]
**Simplify the Expression: A Step-by-Step Guide** =====================================================
Understanding the Problem
The given expression involves the sum of two square roots and a constant. To simplify this expression, we need to understand the properties of square roots and complex numbers.
What are Square Roots?
A square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 16 is 4, because 4 × 4 = 16.
What are Complex Numbers?
Complex numbers are numbers that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit, which satisfies the equation i^2 = -1.
Simplifying the Expression
To simplify the given expression, we need to evaluate the square roots of -16 and -25.
Evaluating the Square Roots
The square root of -16 can be written as:
√(-16) = √(-1 × 16) = √(-1) × √16 = i × 4 = 4i
The square root of -25 can be written as:
√(-25) = √(-1 × 25) = √(-1) × √25 = i × 5 = 5i
Substituting the Values
Now, we can substitute the values of the square roots into the original expression:
√(-16) + √(-25) + 5 = 4i + 5i + 5
Combining Like Terms
We can combine the like terms (the imaginary terms) by adding their coefficients:
4i + 5i = 9i
Final Answer
Therefore, the simplified expression is:
9i + 5
Answer Options
Now, let's compare our answer with the given options:
A. 5 + 9i B. 14 + 0i C. 5 + √41i D. 9 - 5i
Our answer, 9i + 5, is equivalent to option A, 5 + 9i.
Q&A
Q: What is the square root of -16? A: The square root of -16 is 4i.
Q: What is the square root of -25? A: The square root of -25 is 5i.
Q: How do you simplify the expression √(-16) + √(-25) + 5? A: To simplify the expression, we need to evaluate the square roots of -16 and -25, and then substitute the values into the original expression.
Q: What is the final answer? A: The final answer is 9i + 5, which is equivalent to option A, 5 + 9i.
Conclusion
In this article, we simplified the expression √(-16) + √(-25) + 5 by evaluating the square roots of -16 and -25, and then substituting the values into the original expression. We also compared our answer with the given options and found that it is equivalent to option A, 5 + 9i.