Answer:
Step-by-step explanation:
731=3x+2
731 - 2 = 3x+2 -2
729=3x
729/3 = 3x /3
243=x
Step-by-step explanation:
y = x² - 6x + k = (x + a)² = x² + 2ax + a², where a is a real constant.
By Comparing Coefficients, we have
2a = -6 and a² = k.
=> a = -6/2 = -3,
=> k = (-3)² = 9.
Hence the value of k must be 9.
Answer:
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Answer: good job!! They all look right. I checked the calculations with Siri.
Step-by-step explanation: