Evaluate this exponential expression. 3 • (5 + 4)2 – 42 = a. 345 b. 15 c. 227 d. 46

The answer is C. 227

24

step-by-step explanation:

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.