Square of -2

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

The square of -2 is -2 × -2 = 4.

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

Square of -2 in arithmetic form: -2 × -2

The square of a number is found by multiplying the number by itself. 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 -2.

Step 1: Identify the number. Here, the number is -2.

Step 2: Multiplying the number by itself, we get, -2 × -2 = 4.

The square of -2 is 4.

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 -2 So: (-2)² = -2 × -2 = 4

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 -2.

Step 1: Enter the number in the calculator Enter -2 in the calculator.

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

Step 3: Press the equal to button to find the answer Here, the square of -2 is 4.

Tips and Tricks for the Square of -2: 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, 4 is a perfect square because it is 2².

• Inverse operation: An operation that reverses the effect of another operation. For example, squaring and square rooting are inverse operations.

• Base: In exponentiation, the base is the number that is multiplied by itself. For example, in (-2)², -2 is the base.

• Exponent: The power to which a number is raised in exponential expressions. For example, in (-2)², 2 is the exponent.

• Parentheses: Symbols used in mathematics to group numbers or variables, indicating the order of operations.