When you enter an equation into the calculator, the calculator will begin by expanding simplifying the problem. Then it will attempt to solve the equation by using one or more of the following: addition, subtraction, division, taking the square root of each side, factoring, and completing the square. Parentheses and brackets may be used to group terms as in a standard equation or expression. Similarly, 2 x + 5 can also be entered as 2 x + 5 2x 5 can be entered as 2x 5. The calculator follows the standard order of operations taught by most algebra books parentheses, exponents, multiplication and division, addition and subtraction. The only exception is that division is not currently supported attempts to use the / symbol will result in an error.

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To do that, they need to see the relationship between the different quantities in the problem. example: helen has 2 inches of hair cut off each time she goes to the hair salon. If h equals the length of hair before she cuts it and c equals the length of hair after she cuts it, which equation would you use to find the length of helen's hair after she visit the hair salon? a h 2 minus c c c h minus 2 b c 2 minus h d h c minus 2 is there a single method to teaching students how to write algebraic equations? i need help.

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The first thing i do when trying to figure out how to teach something is to analyze my own thinking. How do i think when solving this problem? what are the steps and fine details? it is these details and steps that i may do automatically that i need to explain to students to help them. In this problem there is seemingly lots of information, but really it's about recognizing quantities and the simple relationship between them. This is of course the exact same task as translating a situation explained in words into a mathematical expression using symbols. Children manifest the difficulty in this task when they read a simple word problem and then ask, do i go this times this, or do i divide? , just guessing the operation to perform with the different numbers given in the problem.

They need to step out of the 5, 2, 10, 789, or any others numbers in the problem, and see the general quantities involved and how those are related to each other. In very simple word problems that relationship usually involves just one of the four basic operations. How many do they have together? the keyword together tells us that addition is probably the operation needed. It could also be a time when you are trying to figure out if you were over charged for a bill. This is important stuff when it comes time to spend your money you are going to want to make sure that you are getting paid enough and not spending more than you have to.

There are a few rules to remember when writing algebra equations: first, you want to identify the unknown, which is your variable. What are you trying to solve for? identify the variable: use the statement, let x _. The following key words will help you write equations for algebra word problems: number of results: 117,782 please help me write algebraic equation/ solution if membership for local zoo is $135, members do not pay admission but they are charged $3. A local computer center charges non members $5.00 per session to use the media center. Write an equation that can help you decide whether to become a member then solve the equation and interpret the solution. In 2005 admission to the bronx zoo was $6 for a child and admission to the toronto zoo was 11 candian dollars.