Algebra I by Jerry Bobrow Ph.D.

By Jerry Bobrow Ph.D.

In terms of pinpointing the things you actually need to understand, not anyone does it larger than CliffsNotes. This speedy, potent educational is helping you grasp middle algebraic techniques -- from monomials, inequalities, and analytic geometry to capabilities and diversifications, roots and radicals, and note difficulties -- and get the very best grade.

At CliffsNotes, we are devoted to assisting you do your most sensible, regardless of how tough the topic. Our authors are veteran lecturers and gifted writers who know the way to chop to the chase -- and nil in at the crucial info you must prevail.

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Extra resources for Algebra I

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15 is what % of 60? 9. (3 × 10 )(2 × 10 ) = 4 8 5 4. 5 5. 12 or 2 2 6. 125 7. 8 8. 25% Answers: 1. –3 2. 36 3. 12 9 12 5 5 12 9. 6 × 10 Chapter 3 TERMINOLOGY, SETS, AND EXPRESSIONS Chapter Check-In ❑ Set theory ❑ Algebraic expressions ❑ Evaluating expressions nderstanding the language of algebra and how to work with algebraic expressions will give you a good foundation for learning the rules of U algebra. Some Basic Language The two sections that follow will give you a “heads up” on some ways of writing the same operation and the common algebraic use of some letters.

Change to decimal: 8 7. 8 8. 15 is what % of 60? 9. (3 × 10 )(2 × 10 ) = 4 8 5 4. 5 5. 12 or 2 2 6. 125 7. 8 8. 25% Answers: 1. –3 2. 36 3. 12 9 12 5 5 12 9. 6 × 10 Chapter 3 TERMINOLOGY, SETS, AND EXPRESSIONS Chapter Check-In ❑ Set theory ❑ Algebraic expressions ❑ Evaluating expressions nderstanding the language of algebra and how to work with algebraic expressions will give you a good foundation for learning the rules of U algebra. Some Basic Language The two sections that follow will give you a “heads up” on some ways of writing the same operation and the common algebraic use of some letters.

X 5 -4=2 Add 4 to both sides. x 5 -4= 2 +4 +4 x = 6 5 Multiply both sides by 5 to get x. x ^5h 5 = ^5h 6 x = 30 Example 4: Solve for x. 3 5 x - 6 = 12 Chapter 4: Equations, Ratios, and Proportions Add 6 to each side. 3 5 x - 6 = 12 +6 +6 3x = 18 5 Multiply each side by 5/3 (same as dividing by 3/5). 5 3 5 c 3 m 5 x = c 3 m 18 J N 6 18 x = KK 5 OO 1 3O KY L1 P x = 30 Example 5: Solve for x. 5x = 2x – 6 Add –2x to each side. 5x = 2x - 6 - 2x - 2x 3x = -6 Divide both sides by 3. 3x = - 6 3 3 x =- 2 Example 6: Solve for x.

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