Square of -19

The square of a number is the product of the number itself. The square of -19 is (-19) × (-19). The square of a number always ends in 0, 1, 4, 5, 6, or 9. We write it in math as (-19)², where -19 is the base and 2 is the exponent. The square of a positive and a negative number is always positive. For example, 5² = 25; (-5)² = 25.

The square of -19 is (-19) × (-19) = 361.

Square of -19 in exponential form: (-19)²

Square of -19 in arithmetic form: (-19) × (-19)

The square of a number is multiplying the number by itself. So let’s learn how to find the square of a number. These are the common methods used to find the square of a number.

1. By Multiplication Method
2. Using a Formula
3. Using a Calculator

In this method, we will multiply the number by itself to find the square. The product here is the square of the number. Let’s find the square of -19.

Step 1: Identify the number. Here, the number is -19.

Step 2: Multiplying the number by itself, we get, (-19) × (-19) = 361.

The square of -19 is 361.

In this method, the formula, a², is used to find the square of the number, where a is the number.

Step 1: Understanding the equation Square of a number = a²

a² = a × a

Step 2: Identifying the number and substituting the value in the equation.

Here, ‘a’ is -19. So: (-19)² = (-19) × (-19) = 361

Using a calculator to find the square of a number is the easiest method. Let’s learn how to use a calculator to find the square of -19.

Step 1: Enter the number in the calculator Enter -19 in the calculator.

Step 2: Multiply the number by itself using the multiplication button (×). That is (-19) × (-19)

Step 3: Press the equal to button to find the answer Here, the square of -19 is 361.

Tips and Tricks for the Square of -19: Tips and tricks make it easy for students to understand and learn the square of a number. To master the square of a number, these tips and tricks will help students.

• The square of an even number is always an even number. For example, 6² = 36.

• The square of an odd number is always an odd number. For example, 5² = 25.

• The last digit of the square of a number is always 0, 1, 4, 5, 6, or 9.

• If the square root of a number is a fraction or a decimal, then the number is not a perfect square. For example, √1.44 = 1.2.

• The square root of a perfect square is always a whole number. For example, √144 = 12.

• Perfect square: A number that is the square of an integer. For example, 361 is a perfect square because 19² = 361.

• Exponent: A mathematical notation indicating the number of times a quantity is multiplied by itself. For example, in (-19)², 2 is the exponent.

• Square root: The square root is the inverse operation of squaring a number. The square root of a number is a value that, when multiplied by itself, gives the original number.

• Multiplication: A mathematical operation where a number is added to itself a number of times. For example, (-19) × (-19) is a multiplication operation.

• Calculator: An electronic device used for performing mathematical calculations. It can be used to find squares and square roots quickly.