Domain of Polynomials and Rational Functions

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What is the domain of the polynomial function k(x) = x^2 + 4x + 4?

• all real numbers

• all real numbers less than -4

• all numbers between 0 and 4

• all real numbers except when x = 4

• (-∞, 0)

• (0, ∞)

• (-∞, 1)

• all real numbers

• all real numbers except

  x = -3 and x = 4.

• all real numbers except x = 1.

• all real numbers except x = -3.

• all real numbers except x = 4

• All real numbers

• Numbers less than 5

• Integers

• Only positive numbers

• The domain of h(x) is all real numbers except x=5.

• The domain of h(x) is all real numbers except x=10.

• The domain of h(x) is all real numbers except x=0.

• The domain of h(x) is all real numbers except x=1.

• (-∞, -1)

• (0, 1)

• (1, 2)

• all real numbers

• all real numbers except x=4 and x=-4.

• all real numbers except x=0.

• all real numbers except x=16.

• all real numbers except x=-16.

• All real numbers

• Only even numbers

• Positive integers

• Numbers less than 5

• Domain: All real numbers except x = -2

• Domain: All real numbers except x = 0

• Domain: All real numbers except x = 1

• Domain: All real numbers except x = 2