Final answer:
To evaluate the expression -x² + 6z / y when x = 10, y = -2, and z = -5, substitute the values and simplify.
Step-by-step explanation:
To evaluate the expression -x² + 6z / y when x = 10, y = -2, and z = -5, we substitute the values into the expression:
-x² + 6z / y = -(10)² + 6(-5) / (-2)
= -100 + (-30) / (-2)
= -100 -15/ (-2)
= -100 + 7.5
= -92.5
Therefore, the value of the expression is -92.5.
Learn more about Evaluating expressions