University:
Glendale Community College
Course:
MAT140 | College Mathematics
Academic year:

2019
Views:

58

Pages:

17
Author:

Andrea Flynn

Chapter 5 Practice Test Chapter 5: Factoring 1 – 12: Completely factor the polynomial. State if a polynomial is prime. 1) x2 + 2x – 24 2) -3y3 – 6y2 + 9y 3) 2n2 + 11n + 5 4) 16x2 – 25 5) x2 + 25 6) x3 + 8 7) 5m2 + m – 4 8) 3n2 – n - 2 9) x2 + 5x + 6x + 30 10) 4x2 – 2x - 10x + 5 11) x3 – 125 12) x2 + 3x + 7 13 – 18: Solve each equation. 13) (x + 2)(3x + 24)=0 14) x2 – 7x – 18 = 0 15) 5x2 - 8x + 3 =0 16) x(x – 3) = 10 17) 5x2 + 3x - 2 = 0 18) 2x(x +4) = 0 19) The width of a rectangular garden is 2 feet less than its width. The garden has an area of 35 square feet. Find the dimensions of the garden. 20) The length of the hypotenuse in a right triangle is 5 inches. The longest leg is 1 inch longer than the length of the shortest leg. Find the length of each side. Answers: 1) (x + 6)(x – 4) 2) -3y(y+3)(y – 1) 3) (2n+1)(n+5) 4) (4x + 5)(4x – 5) 5) prime 6) (x + 2)(x2 – 2x + 4) 7) (5m – 4)(m + 1) 8) (3n + 2)(n – 1) 9) (x+5)(x+6) 10) (2x – 5)(2x – 1) 11) (x – 5)(x2 + 5x + 25) 12) prime 3 2 13) x = -2, -8 14) x = -2,9 15) x = 5 , 1 16) x = -2, 5 17) x = 5 , −1 18) x = 0,-4 19) width 5 ft length 7 ft 20) short let 3 inches long leg 4 inches