Answer:
x = - 2
Step-by-step explanation:
given
[tex]\frac{x^2+2x}{x^2+4x+4}[/tex]
The denominator of the rational expression cannot be zero as this would make the expression undefined
equating the denominator to zero and solving for x gives the values that x cannot be.
x² + 4x + 4 = 0
(x + 2)² = 0 ← in factored form
x + 2 = 0 ( subtract 2 from both sides )
x = - 2 ← excluded value or restricted value
