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Alpha Teach Yourself Algebra I in 24 Hours by Jane Cook

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Hour 7
Polynomials: Exponents and Basic Operations
You learned how to simplify algebraic expressions and solve equations, two important concepts that set algebra apart from basic arithmetic. The real-life problems you can now solve include car-rental cost comparisons and how long it takes to reach a savings goal. But you have been limited so far to one-dimensional problems. Many situations in life require two or three dimensions, from finding the square footage of a room when ordering new carpet, to calculating the cubic feet in your home to get the most efficient new furnace and air-conditioner.
 
Fully understanding algebra involves expanding your mind beyond a single dimension. From now on, many of the concepts are more intangible than the ...

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