Question

Medal
Simplify.
(2/7)^2 - (- 2/7) ^2 = ?

Answer 1

2^2/7^2- (-2)^2/7^2=
4/49-4/49=
(4-4)/49=0

Answer 2

You have to remember if the negative sign is inside the brackets (-2/7)^2 the whole expression becomes positive, so it will be 0 once you compute.

Answer 3

so the answer is 0?

Answer 4

yes 0

Answer 5

thank you