Module 1 Introduction to Matter, Energy, and Direct Current 305 pages

Assignment 7Fundamentals of Algebra; Factoring PolynomialsTextbook Assignment: Chapters 9, 10 (111-117)7-1. The literal numbers a, x, and p are more 7-8. What name is given to the algebraic ex- general than the numbers 9, 8, and 7. pression ax - 2bx + cx2 - 4? 1 . Monomial7-2. The commutative law for addition is il- 2. Binomial lustrated by the equation 3. Trinomial 1 . ab = ba 4. Polynomial 2. a + a = b + b 3. a + b = b + a 7-9. Which statement is true regarding the 4 . a(b + c) = ab + ac monomial 17xyz? 1. 17 is the coefficient of xyz.7-3. The associative law of multiplication is 2. 17x is the coefficient of yz. illustrated by the equation 3. 17xy is the coefficient of z. 4. Each of the above is a true statement. 1. abc = acb = cba 2 . a x (b + c) = c x (b + a) 7-10. In the expression xy, what is the co- 3 . a (b + c + d) = ab + ac + ad efficient of xy? 4. a· (b·c) = a·b·c = (a·b)·c 1. 1 2. x7-4. If a = 2, b = -3, and c = 4, the algebraic 3. y sum of a - b - c equals 4. x y 1. -5 2. 1 7-11. What is the coefficient of x2y in the 3. 3 expression x2y - ab? 1. 1 4. 9 2. 2 3. x 27-5. If r = 1, s = 3, t = 12, and x = 15, what 4. y is the value of the expression 7-12. Two terms of an expression are said to be t - 2r x ? like if they contain s 1. at least one factor in common 2. the same numerical coefficient 1. - 3 3. 2 3. the same literal factors with only 2. - 2 4. 3 their exponents different 4. the same literal factors raised to the7-6. The algebraic expression same powers is considered to be three numbers. 7-13. The like terms in the expression7-7. What is the value of the algebraic ex- 2 ac2 - 2bc2 + ac2 - 2c2 are pression 1. 2ac2 and 2bc2 5x2 - 2xy + (3x)2 2 . 2ac2 and ac2 when x = 2 and y = -3? 3. 2ac2 and 2c2 1. 44 4. 2bc2 and 2c2 2. 68 3. 124 4. 148 40