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A. Standard form
B. Vertex form
C. Factor form
D. None

A. (8, 0)
B. (8, 64)
C. (16, 64)
D. (0, 16)

A. x² – 10x + 21
B. x² + 10x + 21
C. x² – 21x + 10
D. x² + 21x + 10

A. Equal roots
B. No real roots
C. Two distinct roots
D. One negative root

A. x(x – 5)
B. (x + 5)x
C. x(x + 5)
D. (x – 5)(x – 5)