Question

Which of the following is the expanded equivalent of (a-b)^2

a. a^2+2ab+b^2
b. a^2-2ab+b^2
c. a^2+2ab-b^2
d. a^2-2ab-b^2

Answer 1

(a-b)^2 = a^2-2ab+b^2

Answer: b. a^2-2ab+b^2