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UNIT 1: (PURPLE A. B. C. D. ALGEBRA 2 – MA8212 MIDTERM EXAM REVIEW – PART I NOTES) Number Systems (1.1) Evaluate & Simplify Algebraic Expressions (1.2) Solve Linear Equations (1.3) Rewrite Formulas and Equations - Literal Equations (1.4) The Number Systems: Real Numb ers 1) 2) Use the above diagram to name the subsets of the real numbers to which each of the following belong. a) c) e) -0.05 2/3 -15 b) d) f) 0.666… 12 g) 0 h) 2 7 List the elements from least to greatest. CR 1/09 -0.033 -5, 1 5 3, , - , 2 2 3 1 3) Simplify each numerical expression. (Use PEMDAS) a) 4) 5) 2(-1 + 3) - 42 8 b) 2(3 + 18 9) – 7 Let a = 2, b = -3 and c = 5 and evaluate the following. a) a - bc c) -2 a + b2 b) 2 ( ) d) -ab - b2 c ( 2b + a ) 2 Simplify each expression by combining like terms. a) CR 1/09 ( ) 4 r + 2 - 5(r - 7) b) ( ) ( ) - 2y - 3 + 4 6 - y - 11y 2 6) Solve the following equations. (Check your work by plugging in your answer.) a) 5x – 4 = 16 b) -3(4r – 8) = -36 c) 3x – 7 = 8x + 13 d) 15(x - 2) = -13(x + 1) + 11 e) 6(6x + 6) – 5 = 1 + 6x f) x + 2 2x - 1 10 + x + = 4 3 6 CR 1/09 3 7) Solve for the specific variable. e) 6x – 2y = 8 for y f) V = r2h for h UNIT 2 – PINK NOTES A. Properties of Exponents (5.1) B. Scientific Notation (5.1) 10) Simplify each expression involving exponents. (ALL POSITIVE EXPONENTS!) Here is a reminder of some of the Exponent Rules: x a · x b = x a+b a) c) e) CR 1/09 ( ) x7 3 x5 ix 3y5 12y 2 (-3a6bc-3)(-5a-7b1) = x 21 x 10 x 14 = 1 x -5 x4 y8 b) -5h-3 d) æ 12a 3b4 ö ç ÷ ç 15a 7b ÷ è ø f) (-2xy3z10)5 = 1 x 5y 8 3 æ 2x 5 ö 8x 15 ç ÷ ç 10 ÷ = 30 z z è ø 2 4 g) h) 8x -1y 4 i) j) (4x)2 y -9 k) 11) (3a)2(a8b0) æ 5a -3b 4 ö ç ÷ 8 è 7a b ø 2 l) (7ky4)(-2k2y-2)3 -3x 3y 7 9xy -3 -7xy 3 3x 5 · 6xy -3 21x -2y 4 Evaluate and put the following expressions in scientific notation. a) c) CR 1/09 56,019,000 b) ( -6.7 ´ 10 ) (2.0 ´ 10 ) 5 5 d) 0.05 ´ 1012 2 ´ 106 8 ´ 10-8 5