Question

Excluded Values.
Simplify each and state the excluded values.

45x/25x + 20

40/12n + 40

5k - 35/k - 7

m + 7/m^2 + 9m + 14

Halp. D:

Answer 1

Find the excluded values by setting the denominator = 0 and solving for the values that make it = 0. Those are the excluded values, and must be found BEFORE simplifying! They remain excluded values even if simplification removes them from view.