Question

For %0D%0Ab%0D%0A≠%0D%0A0%0D%0A,%0D%0A%0D%0A≠%0D%0A0%0D%0A,%0D%0A which of the following expressions is equivalent to %0D%0A14%0D%0Ab%0D%0A8%0D%0A−%0D%0A7%0D%0Ab%0D%0A4%0D%0A %0D%0A?%0D%0A14%0D%0A%0D%0A8%0D%0A-%0D%0A7%0D%0A%0D%0A4%0D%0A %0D%0A?%0D%0A%0D%0A%09A.%09%0D%0A−%0D%0A2%0D%0Ab%0D%0A2%0D%0A-%0D%0A2%0D%0A%0D%0A2%0D%0A%0D%0A%09B.%09%0D%0A−%0D%0A2%0D%0Ab%0D%0A4%0D%0A-%0D%0A2%0D%0A%0D%0A4%0D%0A%0D%0A%09C.%09%0D%0A7%0D%0Ab%0D%0A2%0D%0A7%0D%0A%0D%0A2%0D%0A%0D%0A%09D.%09%0D%0A21%0D%0Ab%0D%0A2%0D%0A21%0D%0A%0D%0A2%0D%0A%0D%0A%09E.%09%0D%0A21%0D%0Ab%0D%0A4

Answer 1

C. -7b/2 + 7/2