3 years ago

I need to know the values of x that are NOT in the domain of h.

Mathematics

1 answer:

Mandarinka [93]3 years ago

7 0

Answer:

x = - 7, + 7

Step-by-step explanation:

The denominator of h(x) cannot be zero as this would make h(x) undefined. Equating the denominator to zero and solving gives the values that x cannot be.

solve :

x² - 49 = 0 ⇒ (x - 7)(x + 7) = 0 ⇒ x = ± 7

The domain is valid for all x ∈ R , x ≠ - 7, + 7

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