What is A2 - (B + C) in simplest form?

A=8x2 - 25x + 7

B=8x2 - 25x + 11

C=10x2 - 25x + 7

D=10x2 - 25x + 11

A, B, and C are polynomials, where:

A = 3x - 4

B = x + 7

C = x2 + 2

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