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Simplify the squares and square roots. $$\sqrt{9}$$

Short Answer

Expert verified
The square root of 9 is 3.

Step by step solution

01

- Understand the square root operation

The square root operation finds a number which, when multiplied by itself, equals the given number. For example, the square root of 9 is a number which, when squared, equals 9.
02

- Identify the perfect square

Recognize that 9 is a perfect square because it is equal to 3 squared. That is, 9 = 3^2.
03

- Apply the square root

Taking the square root of 9 involves finding a number which, when squared, equals 9. Thus, \(\text{the square root of } 9 \) is 3.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

simplifying square roots
Simplifying square roots can be made easier with a few basic steps. The goal is to express the square root in its simplest form. Let's use \( \sqrt{9} \) as our example.

First, it's important to know what a square root represents. The square root of a number finds a value which, when multiplied by itself, results in the original number. In our example, we want to identify a number that when multiplied by itself gives 9.

Next, recognize the perfect squares that are relevant. For 9, we know that \( 3 \times 3 = 9 \). This tells us that 9 is a perfect square of 3. Therefore, \( \sqrt{9} = 3 \).

Practicing with other numbers can help you get more comfortable with the process.
  • Find the prime factors of the number inside the square root.
  • Group the factors in pairs.
  • Take one factor from each pair outside the square root.
With these steps, you'll be simplifying square roots in no time!
perfect squares
Perfect squares are numbers that are the product of an integer multiplied by itself. They are essential in simplifying square roots.

For example, some common perfect squares include:
  • 1 (1×1)
  • 4 (2×2)
  • 9 (3×3)
  • 16 (4×4)
Identifying perfect squares can make the process of simplifying square roots much quicker. If you can recognize that a number is a perfect square, you can simplify its square root instantly. For instance, since 9 is a perfect square of 3, we know that \( \sqrt{9} = 3 \).

Perfect squares are very useful when dealing with prealgebra and more complex math problems. Recognizing them reduces complex expressions and simplifies calculations.
prealgebra
Prealgebra lays the foundation for more advanced mathematics. One essential skill in prealgebra is working with square roots and perfect squares.

Understanding how to simplify square roots is crucial. It is a building block for solving equations and algebraic expressions. When you encounter a problem like \( \sqrt{9} \), the ability to recognize that 9 is a perfect square and simplify it to 3 demonstrates fundamental prealgebra skills.

Practicing these concepts in prealgebra will prepare you for future topics like algebra and geometry. Remember:
  • Identify perfect squares
  • Simplify square roots by recognizing these squares
  • Practice regularly to strengthen your understanding
By mastering these skills, you'll have a strong advantage as you advance to more complex mathematics topics.

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Most popular questions from this chapter

In the U.S. Customary System of measurement, 1 ton \(=2000\) Ib. In the metric system, 1 metric ton \(=1000 \mathrm{kg}\). Use this information to answer Exercises \(69-72\). The mass of a Mini-Cooper is 1.25 metric tons. How many pounds is this? Round to the nearest pound.

The Blaisdell Arena football field, home of the Hawaiian Islanders football team, did not have the proper dimensions required by the arena football league. The width was measured to be 82 ft 10 in. Regulation width is 85 ft. What is the difference between the widths of a regulation field and the field at Blaisdell Arena?

Convert the units of area by using multiple factors of the given unit ratio. $$720 \text { in }^{2}=\text{______}\mathrm{ft}^{2}$$

In one day, Stacy gets \(600 \mathrm{mg}\) of calcium in her daily vitamin, \(500 \mathrm{mg}\) in her calcium supplement, and \(250 \mathrm{mg}\) in the dairy products she eats. How many grams of calcium will she get in one week?

In the Expanding Your Skills of Section \(8.1,\) we converted U.S. Customary units of area. We use the same procedure to convert metric units of area. This procedure involves multiplying by two unit ratios of length. Example: Converting area Convert \(1000 \mathrm{mm}^{2}\) to square centimeters. $$\text { Solution: } \frac{1000 \mathrm{mm}^{2}}{1} \cdot \frac{1 \mathrm{cm}}{10 \mathrm{mm}} \cdot \frac{1 \mathrm{cm}}{10 \mathrm{mm}}=\frac{1000 \mathrm{mm}^{2}}{1} \cdot \frac{1 \mathrm{cm}^{2}}{100 \mathrm{mm}^{2}}=\frac{1000 \mathrm{cm}^{2}}{100}=10 \mathrm{cm}^{2}$$ convert the units of area, using two factors of the given unit ratio. $$4.1 \mathrm{m}^{2}=\quad \mathrm{cm}^{2}$$ $$\left(\text { Use } \frac{100 \mathrm{cm}}{1 \mathrm{m}}\right)$$

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