Step-by-step explanation:
A and C are correct options
First simplify the number part, 14/2 = 7/1
then the x part,
y doesn't need to be simplified
then simplify the z part, z^-6 = z^6
put it all together...
Step-by-step explanation:
x² + 4x - 9
= (x + 2)² - 13
a = 2, b = -13.
Answer:
b.
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