What are the excluded values?

7b^3/b^2-7b+10

the answer is option B, b = 2 and 5

The expression

7b^3 / (b^2 - 7b + 10)

will become undefined if the denominator is equal to 0. To find the excluded values, we must then equate the denominator to 0.

So,

b^2 - 7b + 10 = 0

Solving the quadratic equation will give the roots:

b = 5 and 2

Therefore, the excluded values are b = 5 and 2.