Road Map #3: More Advanced Expressions/One-Step and Two-Step Equations

May 28th, 2015
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A. More Advanced Expressions __________We were introduced to expressions in Road Map #2; let’s develop our reasoning with them on a more advanced scale. Problem 1: Evaluate: 2x + y – z2; x = 3, y = –4, z = 5

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Road Map #3: More Advanced Expressions/One-Step and Two-Step EquationsA. More Advanced Expressions __________We were introduced to expressions in Road Map #2; lets develop our reasoning with them on a more advanced scale.Problem 1: Evaluate: 2x + y z2; x = 3, y = 4, z = 5Problem 2: Evaluate: b2 4ac; a = 1, b = 1, c = 6Problem 3: Evaluate: 3(m 4n)3; m = 2, n = 1Problem 4: Evaluate: (x + y)(x y); x = , y = Problem 5: Evaluate: ; w = 3B. Absolute Value and Square Roots__________There are other types of mathematical operations that we will explore in Algebra I. Two of these are ____________________ and ____________________. Lets touch on absolute value first.Definition of Absolute Value[ The absolute value of a positive number or zero is ____________________. The absolute value of a negative number is the _______________ of the negative number (that is, the positive form). ]The symbol for absolute value is a pair of vertical lines around the number: |3|. For example, |3| = _____ and |3| = _____.Lets do a couple of order of operations problems with these first and then apply them to expressions. Problem 6: Evaluate: |4| |7|Solving note: Absolute value signs are like __________. You may not distribute into them.Problem 7: Evaluate: 2 |3 + (4)|Problem 8: Evaluate: 2x |x| + 4; x = 3Problem 9: Evaluate: |x y| + |y x|; x = 5, y = 8Problem 10: Evaluate: 2|3x

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