Question

(L +M) ² - ( l -m)²
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Answer 1

Answer:

NASA stands for National Aeronautics and Space Administration. NASA was started on October 1, 1958, as a part of the United States government. NASA is in charge of U.S. science and technology that has to do with airplanes or space.

Answer 2

A²- B² = (a+b) ( a- b)

using this property you can solve it

i.e. L+M +L-M

2L is a answer