Which polynomial represents the sum below?

(18x2 - 18) + (-13x2 - 13x + 13)

a. 5x2 - 13x - 5

b. 31x2 - 31x - 5

c. 18x2 - 31x - 18

d. 5x2 - 13x - 31

sadsdda

step-by-step explanation:

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like:

first 15 divide by 2 = 7.5

100 divided by 7.5 is 13.

15 / 2 = 7.5

100 / 7.5 = 13.