501 Algebra Questions, 2nd edition - download pdf or read online

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ISBN-10: 157685552X

ISBN-13: 9781576855522

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Additional resources for 501 Algebra Questions, 2nd edition

Example text

Next you evaluate the term with the exponent. Signs the same? Multiply the terms and give the result a positive sign. Substitute the equivalent values into the original expression. The simplified value of the expression is as follows: 35. Substitute the values for the variables into the expression. Look first to evaluate the term inside the bold parentheses. The first term has an exponent. Evaluate it. Evaluate the second term. Substitute into the original numerical expression. Evaluate the first term.

When the variables are given number values, you can multiply the factors of a term together to find its value, as you did in Chapter 2. When you have terms that are alike, you can add or subtract them as if they were signed numbers. You may find that combining like terms may be easier if you do addition by changing all subtraction to addition of the following term with its sign changed. This Team-LRN 501 Algebra Questions strategy will continue to be shown in the answer explanations. But as you either know or are beginning to see, sometimes it’s easier to just subtract.

9(2x − t) + 23xt + x(−4 + 5t) 74. 4{2a(a + 3) + 6(4 − a)} + 5a2 75. 8(2a − b − 3c) + 3(2a − b) − 4(6 − b) 27 Team-LRN 501 Algebra Questions Answers Numerical expressions in parentheses like this [ ] are operations performed on only part of the original expression. The operations performed within these symbols are intended to show how to evaluate the various terms that make up the entire expression. Expressions with parentheses that look like this ( ) contain either numerical substitutions or expressions that are part of a numerical expression.

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501 Algebra Questions, 2nd edition by LearningExpress


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