Write as a product: a^3-m^3 n^9
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B is false, since by the inclusion/exclusion principle,
By independence, we have , which is zero if either of
or
is 0, which isn't guaranteed.
It is given in the question that
A farmer owns about 960 acres of land. If his farm is square.
First we convert acres to miles square, and the conversion expression is
Therefore,
Let the side length of the square be x miles .
And the formula of area of square is