2. What is the standard form of the quadratic equation y = x2 + 6x + 9?
A. y = (x + 3)2
C. y = 3 (x - 3)2
B. y = (x + 3)2 + 3
D. y = 3 (x + 3)2 - 3
A. y = (x + 3)2
C. y = 3 (x - 3)2
B. y = (x + 3)2 + 3
D. y = 3 (x + 3)2 - 3
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Answer:
A
Step-by-step explanation:
y=(x+3)²
y=(x+3)(x+3)-------use FOIL method
y=x²+3x+3x+9
y=x²+6x+9