Which of the following is not a polynomial identity? A. (a^2 + b^2)(c^2 - d^2) = (ac - be)^2 + (ad + bc)

B. a^3 - b^3 = (a - b)(a^2 + ab +b^2)

C. a^2 - b^2 = (a + b)(a - b)

D. (a + b)^2 = a^2 + 2ab+ b^2

Someone answer asap for ! the boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a. e = 2b - 212 b. b = 2e - 212 c. e = -2b + 212 d. b = -2e + 212