Question

find the product (j+7)(j-7) and also this question (4m^2-5) (4m^2+5) Medals will be given

Answer 1

(j+7)(j-7)

use foil

j^2-7j+7j-49

so that would be j^2-49

Answer 2

(4m^2-5) (4m^2+5)

same thing

16m^4+20m^2-20m^2-25

which is 16m^4-25