Algebra 1

Algebra 

Algebra is very easy.

we Learn Algebra in easy way step by step

1. The part of mathematics in which letters and other symbols are used to represent numbers and quantities in formula and equations.
2. A system of this based on given axioms.

Plan for Problem Solving

Step 1 Understand the problem.

Step 2 Plan the solution.

Step 3 Solve the problem.

Step 4 Check the solution.

Step 1 Understand the Problem:

To solve a verbal problem, first read the problem carefully and explore what the problem is about.

• Identify what information is given.
• Identify what you need to find.

Step 2  Plan the Solution:

• One strategy you can is to write an equation. Choose a Variable to represent one of the unspecified numbers in the problems in the problem. This is called defining a variable. Then use the variable ti write expression for the other unspecified numbers in the problem.

Step 3 Solve the Problem

• Use the strategy you chose in step 2 to solve the problem.

Step 4 Check the Solution

Check your answer in the context of the original problem.

• Does your answer makes any sense.
• Does it fit the information in the problem?

What is Real Number?

Real Number A number line can be used to show the sets of natural numbers, whole numbers, integers,and rational numbers. values greater than 0, or positive numbers, are listed to the right 0, and values less than 0, or negative numbers, are listed ti the left of 0

natural numbers: 1,2,3,...

whole numbers:0,1,2,3,...

integers: .....,-3,-2,-1,0,1,2,3....

rational numbers: number that can be expressed in the form a/b, where a and b are integers and b  ≠ (not equal to) 0

A Square root : 


                    is one of two equal factors of a number. For example, one square root of 64, written as  √64, is since 8 . 8 or 8² is 64. The nonnegative square root of a number is the principal square root. Another square root of 64 is -8 science (-8). (-8) or (-8)²  is also 64. A number like 64, with a square root  that is a rational number is called a perfect square. The square roots of a perfect square are irrational numbers.

A number such as √3  is the square root of  a number that is not a perfect square. It cannot be expressed as a terminating or repeating decimal;  √3  ͌  1.73205... Numbers that cannot be expressed as terminating or repeating decimals, or in the form a/b, where a and b are integers and b≠0, are called irrational numbers. Irrational numbers and rational numbers together form the set of real numbers.