57. What is the sum of x2 + 5x – 2 and 8 - 7x?

a. x2 - 12x – 10
b. x2 + 12x + 10
C. X2 - 2x + 6
d. x2 + 2x - 6

58. A carpenter has a wood that is 3x + 2 feet long. Represent the length of the wood after 2x - 5 feet have been cut?

a. X-7
b. x +7
C. X-3
d. x + 3

59. From 4x2 + 3x - 3, add 5 - 4x.

a. 4x2 - X + 2
b. 4x2 + x-2
c. 4x2 - 7x + 8
d. 4x2 + 7x - 8

60. What is 2x3 - 5x2 + 3x + 14 less than 5x3 + 7x + 9x2 - 20?

a. 3x3 + 14x2 + 4x - 6
C.-3X3 – 14x2 + 4x - 34
b.-3x2 - 4x2 - 4x - 34
d. 3x – 14x2 + 4x - 34 - - - - -​