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What is the middle term in the expansion of (x + y)^4?
A4x^3y
B4xy^3
Cx^2y^2
D6x^2y^2
Answer & Solution
Correct answer: D. 6x^2y^2
With n = 4 the middle term is the third, 4C2 x^2 y^2 = 6x^2y^2.
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