Mada za sehemu hiiAlgebraMada 4
- Binary operation
- Brackets in computation
- Quadratic expressions
- Factorization
Binary Operations
Binary operations involve two numbers or operands. The operation is carried out using an operation rule and the result is a single value. For example, adding two numbers or multiplying them are binary operations because two numbers are involved and produce one result. The instructions can be represented with symbols like ×, ∗, +, −, and so on, or simply described in words as addition, multiplication, etc.
Performing Binary Operations
Here are some examples of common binary operations.
Example 1: Evaluate 4+6
Solution:
4+6=10This is an example of addition, where the two operands 4 and 6 are added together to give 10.
Example 2: Find 7×3
Solution:
7×3=21This is a multiplication operation where 7 is multiplied by 3 to give 21.
Example 3: Solve 12−5
Solution:
12−5=7This example demonstrates subtraction, where 5 is subtracted from 12, resulting in 7.
Example 4: Evaluate 420
Solution:
420=5This division operation involves dividing 20 by 4, which results in 5.
Example 5: Calculate 5∗6
Solution:
5∗6=30In this case, ∗ represents multiplication. The operands are 5 and 6, and their product is 30.
Example 6: Find the square of 5, 52
Solution:
52=25Exponentiation is a binary operation where 5 is raised to the power of 2. This means 5 is multiplied by itself to give 25.
Example 7: Find the cube of 3, 33
Solution:
33=27Here, we are using exponentiation again, where 3 is raised to the power of 3, which results in 27.
Example 8: Calculate 9mod4
Solution:
9mod4=1This is a modular arithmetic operation where 9 is divided by 4, and the remainder is 1. So, 9mod4=1.
Example 9: Solve 8÷2×2
Solution:
8÷2×2=8In this example, we first divide 8 by 2, which gives 4, and then multiply 4 by 2 to give 8. Note that division and multiplication have equal precedence, so we perform them from left to right.
Example 10: Simplify 12÷3+5×2
Solution:
12÷3+5×2=4+10=14Here, we perform the division and multiplication first, and then add the results. First, divide 12 by 3 to get 4, and then multiply 5 by 2 to get 10. Finally, add 4 and 10 to get 14.
Additional Binary Operations
Besides the basic operations of addition, subtraction, multiplication, and division, there are several other types of binary operations. Here are some examples:
- Exponentiation: This operation raises a number to a given power. For example, 24=16.
- Modular Arithmetic: This operation finds the remainder when one number is divided by another. For example, 10mod3=1.
- Logical AND: In Boolean algebra, the logical AND of two values returns true (or 1) if both operands are true (or 1). For example, 1∧1=1 and 0∧1=0.
- Set Operations: In set theory, operations like union (A∪B), intersection (A∩B), and difference (A−B) are also binary operations.
Summary of Common Binary Operations
- Addition: a+b
- Subtraction: a−b
- Multiplication: a×b
- Division: ba
- Exponentiation: ab
- Modulus: amodb
- Logical AND: a∧b
- Set Union: A∪B
- Set Intersection: A∩B
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