Q. What is the domain of this quadratic function?y=x2+2x−24Choices:(A){x∣x≥−25}(B){x∣x≤−1}(C){x∣x≥−1}(D)all real numbers
Function Domain Definition: The domain of a function refers to the set of all possible input values (x-values) for which the function is defined. For a quadratic function, which is a polynomial function, the domain is typically all real numbers because you can plug any real number into a quadratic equation and get a real number out.
Confirming Quadratic Function Domain: To confirm the domain of the quadratic function y=x2+2x−24, we need to check if there are any restrictions on the x-values. Since there are no square roots, logarithms, or denominators that could potentially restrict the domain, we can conclude that the domain is all real numbers.
Correct Choice Explanation: The correct choice that represents all real numbers from the given options is (D) all real numbers. This is because there are no x-values that make the function undefined.
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