Answer: 4z² - 10z + 6
Explanation:
The expression -(-4z² + 10z − 6) can be simplified by applying the rule that -(-a) = a. So, -(-4z² + 10z − 6) = 4z² - 10z + 6. The negative signs before the 4z² and 10z have been eliminated, leaving only one negative sign before the last term 6. The simplified expression is 4z² - 10z + 6.