MATH 021 Midterm: Math 021 21Ex2SamB
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Exam ii, sample b: find the greatest common factor (gcf) of the polyno, factor the perfect square trinomial: mial. 9: x = 3, x = 3, x = . 9: x = 1, x = 2, x = 3: x = 1, x = 1, x = 3, solve for x: (x + 1)(x 2) = 4, x = 3, x = 3, x = 3, x = 2, x = 2, x = 3. , nd f (3): 3, 5, 7, 6, multiply the rational expressions: 5a + 30 a2 + a a) b) c) d) 3: divide the rational expressions: x2 y2. 4x + 2y x2 4xy 5y2. 2x2 9xy 5y2 a) b) c) d) x y. 4 x: 3x2 144 x2 36, 3x2 144 x3 36x, 3x2 + 144 x3 36x x 4 x3 36x d, which of the following is the simpli cation for the com- 3x + plex rational function given by a) b) c)
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No common factor m^5 (20m^4 + 6m^2 +20) 2m^5 (10m^4 + 3m^2 +10) |
(0, 0) (0, 1) (1, 1) |
121p^2 + 88p - 16 121p^2 - 16 121p^2 - 88p -16 |
(7, -7) (9, -9) (-7, 7) |
(18x^2 - 2)(x - 5) (3x^2 - 2)(6x - 5) x(18x + 2)(x +5) |
x^2 + 8xy + 8y^2 x^2 + 8xy + 15y^2 x + 8xy + 15y |
54x^14 + 72x^9 54x^14 + 72x^9 -42x^7 54x^14 + 12x^2 -7 |
(15x - 2)(x + 4) (3x - 2)(5x + 4) (3x + 2)(5x -4) |
Trinomial, degree 3 Trinomial, degree18 Trinomial, degree11 |
12x^42 + 9 10x^26 - 2x^14 + 4x^12 +9 4x^8 + 4x^7 + 4x^6 +9 |
-3n^5 + 11n^3 - 3 5n^8 -3n^5 + 11n^3 -9 |
(-2, 4) (-1, 3) No solution |
(4, 1) (4, 0) No solution |
False |
False |
False |
False |
False |
False |
False |