Answer:
c² + 17c - 5
Explanation:
(2c²+ 7c − 1) − (c²− 10c + 4)?
= 2c²+ 7c − 1 − c² + 10c - 4
= 2c² - c² + 7c + 10c - 1 - 4
= c² + 17c - 5
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