As a grade? Yes, but not by very much. By average of 5%
That depends what the values of k and b are.
2b
All the time
20a plus 14 will be 34a minus 8a minus 7 34a minus 8 is 26a minus 7 is 19a. The single b is 1b plus 6b which is 7b minus 2b equals 5b.
B plus is better.
its B
a square minus b square
As a grade? Yes, but not by very much. By average of 5%
That depends what the values of k and b are.
2b
7a-2b
Yes
(b-c)(a+b)-ac
2a
All the time
20a plus 14 will be 34a minus 8a minus 7 34a minus 8 is 26a minus 7 is 19a. The single b is 1b plus 6b which is 7b minus 2b equals 5b.