Question

expressions and equations
question 5 / 14
if m = -5 and n = -8, evaluate the following expression:
6m - 3n² - 8
select one answer
a -230
b -170
c -14

Explanation:

Step1: Substitute given values

$6(-5) - 3(-8)^2 - 8$

Step2: Calculate powers first

$6(-5) - 3(64) - 8$

Step3: Perform multiplications

$-30 - 192 - 8$

Step4: Compute final subtraction

$-30 - 192 - 8 = -230$

Answer:

A. $-230$