This Algebra 2 math course is divided into 13 chapters and each chapter is divided into several lessons.
How to Learn Algebra (with Pictures) - wikiHow
Under each lesson you will find theory, examples and video lessons. Mathplanet hopes that you will enjoy studying Algebra 2 online with us! How to graph functions and linear equations. How to solve system of linear equations. Polynomials and radical expressions. Quadratic functions and inequalities. Multiplication and division rank equally, so simply solve either of these operations from left to right.
The same goes for addition and subtraction. First solve the expression in parentheses: In this particular equation, there are no exponents, so you can move on to the next step. Next, multiply and divide left-to-right: Practice with some examples. The more problems you practice, the better you will be at solving them.
Do as many problems as you need to feel confident in solving them. When starting to learn algebra, the material can get overwhelming very quickly. Even asking a friend who may have a better understanding can be useful. Ask your parents about getting a tutor if you are really struggling.
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Recognize that algebra is just like solving a puzzle. Like any puzzle, there are pieces. Learning how to recognize the numbers and symbols for the placeholders that they are makes the solution much easier to grasp. Try to find the missing number in a problem where the final answer is given. The missing number is 8, because 1 plus 8 equals 9.
This is basic algebra. Perform operations on both sides of the equation. When solving an algebraic problem, you must remember that if you alter one side of the equation in any way, you must do the exact same thing to the other side of the equation. If you add, subtract, multiply, or divide, you must perform the same operation to the opposite side.
Isolate the variable on one side of the equation. When given an algebraic expression, you will notice that there are constants and variables. A constant is any number given, while a variable is a letter that represents an unknown number. If the variable has a coefficient, divide both sides by that coefficient to get the variable alone.
Why Use a Letter?
Take the root of the number to cancel an exponent. If you are solving for a variable that is squared, you will need to take the square root of it to solve the problem. Conversely, If the variable is a square root, then you will need to square it to solve the problem. Whenever you have terms that have the same variable, you can combine them to simplify the problem. This helps to keep equations manageable and easier to solve.
Remember, terms that have different exponents are not identical terms: The following are like terms: To combine them, add: Solving Equations , like this one: Formulas and Literal Equations , which shows how to solve an equation for a particular variable. Applied Verbal Problems shows why we are doing all this. You've been using algebra since your early schooling, when you learned formulas like the area of a rectangle , with width w , height h:.
We used letters to stand for numbers. Once we knew the width and height, we could substitute them into the formula and find our area. Literal numbers the letters used in algebra can either stand for variables the value of the letter can change, like the w , h and r in the examples of the area of a rectangle and the area of a circle or constants where the value does not change , for example:. Algebra is a powerful tool for problem solving in science, engineering, economics, finance, architecture, ship-building and many other day-to-day tasks.
If we didn't use letters in place of numbers and used words instead , we would be writing many pages for each problem and it would be much more confusing.
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