Question

1. (7m − 3n)2 = ?
a. (7m)2-2×7m×(-3n)+(-3n)2
b. (7m)2-2×7m×(-3n)-(-3n)2
c. (7m)2-2×7m×(3n)+(3n)2

Answer 1

Answer:

c is the corret ans bye ...