28. Which of the following expressions is the simplified form of the expression below? A. B. C. D. Which expression is equivalent to (7x2 – 5x + 1) – (x2 – 3x – 2)? 29. 6x2 – 8x – 1 6x2 – 2x – 1 A. C. 6x2 – 8x + 3 6x2 – 2x + 3 B. D. 30. A triangle has side lengths of inches and inches. If the perimeter of the triangle is inches, which expression represents the length, in inches, of the third side of the triangle? A. B. C. D. Which expression is equivalent to (2x2 – 3x + 1) + (4x2 – 2x – 31. 5)? 6x2 – 5x + 6 6x2 – x – 4 A. C.
28. Which of the following expressions is the simplified form of the expression below? A. B. C. D. 29. Which expression is equivalent to (7x2 – 5x + 1) – (x2 – 3x – 2)? A. 6x2 – 8x – 1 C. 6x2 – 2x – 1 B. 6x2 – 8x + 3 D. 6x2 – 2x + 3 30. A triangle has side lengths of inches and inches. If the perimeter of the triangle is inches, which expression represents the length, in inches, of the third side of the triangle? A. B. C. D. 31. Which expression is equivalent to (2x2 – 3x + 1) + (4x2 – 2x – 5)? A. 6x2 – 5x + 6 C. 6x2 – x – 4