If 27(x + y)3 + (x - y)3 = 2(2x + y) (Ax2 + Bxy + Cy2), then what is t – McqOptions

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1.	If 27(x + y)3 + (x - y)3 = 2(2x + y) (Ax2 + Bxy + Cy2), then what is the value of (A - B + C)?
A.	11
B.	7
C.	4
D.	21
Answer» D. 21

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