Question

Which of the following is correct?
a. (a – b)2 = a2 + 2ab – b2

b. (a – b)2 = a2 – 2ab + b2
c. (a – b)2 = a2 – b2

d. (a + b)2 = a2 + 2ab - b2
the two which is for the a and b are powers

Answer 1

Answer:

As given in the Question- (a+b)2=a2+2ab+b2

Using The Identity To simplify (2p+3q)2 =(2p)2+2(2p×3q)+(3q)2

= 4p2+2(6pq)+9q2

= 4p2+12pq+9q2