Question

a=4, b=5
them find (a+b)²and (a-b)²

Answer 1

Answer:

(a+b)^2=(4+5)^2=9^2=81

(a-b)^2=(4-5)^2=(-1)^2=1

Do note that I haven't used any formula, considering the fact that the values of the variables were mentioned in the question.

Answer 2

Answer:

a= 4 & b= 5

(a+b)^2 = (4+5)^2 = (9)^2 = 81

(a-b)^2 = (4-5)^2 = (-1)^2 = 1

hope it's helpful