Answer:
Please see attachment
Step-by-step explanation:
Please see attachment
a. -42 + (-17)
Note that one negative and one positive = negative
-42 + (-17) = -42 - 17 = -59
b. (-42)/(-7)
Note that when dividing or multiplying two negatives, the answer will be positive
(-42)/(-7) = 6
c. (-5)² = (-5)(-5) = 25
25 is your answer
hope this helps
Answer is C. multiply by 3 - square root 5
using a^2 - b^2 = (a + b)(a - b)
-12n - 19 = 77
-12n = 96
n = -8