Answer:
(a) The product of the sum of a and b and their difference.

(b) The tripled product of 6a and b².

(c) The difference of the squares of 2m and 7n.

Answer:
A
Step-by-step explanation:
A its A i ssssssssseewwwwaaarrrrrr
Answer:
17 = K
Step-by-step explanation:
Add 5 to both sides to get K = 17
It's called a rectangle. This is just a definition, so there is not much to explain.