Unit 1 Review.docx

Extraneous solution example we see that we had a

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Extraneous Solution Example: We see that we had a variable on BOTH sides of our absolute value equation, so we need to check our solutions to see if they work in the original equation: 1.4: Rewriting Equations and Formulas Literal Equation: an equation that has two or more variables. Most equations in Geometry, Chemistry, and Physics have two or more variables. Formula: an equation which shows how one variable is related to other variables The key to solving literal equations is to isolate the one variable for which you are solving the equation, and treat all other variables “like a number”.

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A Simple, Two-Step Example of Rewriting a Literal Equation: More tools we can use to solve equations: 7. Factoring (for example 6 x + 9 becomes 3 ( 2 x + 3 ) or 4 xy + 2 y becomes 2 y ( 2 x + 1 ) ) Rewriting a Literal Equation using Factoring : Some Common Formulas:
Rewriting the Formula for Temperature: Using the rewritten Formula for Temperature: What is the Fahrenheit temperature for planet Mercury, which is 427 ° C ? Rewriting the Formula for Simple Interest:
• Fall '16
• Addition, Expression, Elementary algebra, c. Analytical Strategies, 427 °

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