Problem 9
Question
Evaluate each expression or indicate that the root is not a real number. $$\sqrt{25}-\sqrt{16}$$
Step-by-Step Solution
Verified Answer
The short answer is 1.
1Step 1: Determine the Square Root of 25
The square root of 25 is simply calculated as \( \sqrt{25} = 5 \).
2Step 2: Determine the Square Root of 16
The square root of 16 is calculated as \( \sqrt{16} = 4 \).
3Step 3: Subtract the two Square Roots
The subtraction of the two square roots is performed as \(5 - 4 = 1\).
Other exercises in this chapter
Problem 8
Evaluate each exponential expression in Exercises 1–22. $$ (-9)^{0} $$
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Simplify each rational expression. Find all numbers that must be excluded from the domain of the simplified rational expression. $$\frac{x^{2}-12 x+36}{4 x-24}$
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Factor out the greatest common factor. $$ x^{2}(x-3)+12(x-3) $$
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Perform the indicated operations. Write the resulting polynomial in standard form and indicate its degree. $$\left(-6 x^{3}+5 x^{2}-8 x+9\right)+\left(17 x^{3}+
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