Find the largest value of $x$ such that $3x^2 + 17x + 15 = 5.$

The largest x that satisfies

is the largest solution to

We have

and so the largest value of x we want is -2/3.

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step-by-step explanation:

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)