1 answer:
Answer:
(m+n)(m-n)
Step-by-step explanation:
formula: x^2 - y^2 = (x+y)(x-y)
add m and n to x and y to get
m^2 - n^2
then the formula says insert the m and n into the formula answer of (x+y)(x-y) to get our answer of
(m+n)(m-n)
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