1 answer:
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Answer:
(x+y)(x-y)
x^2 - xy + xy - y^2
x^2 - y^2
99/110
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11,15,19,23
an = 11 + 4(n-1)
an = 11 + 4n - 4
an = 4n + 7
Answer:
10
Step-by-step explanation:
count the full squares then add up the halfs and u get 10
