Construct a quadratic with zeros \(-2\) and \(6\) and scale factor \(1/2\). Write the root factors with correct signs, include the fractional scale factor, and check both zeros by substitution.

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f(x) = 0.5(x + 2)². It repeats the zero −2 and does not have zero 6.

f(x) = 0.5(x + 2)(x − 6) = 0.5x² − 2x − 6. Its zeros are −2 and 6, and its leading coefficient is 1/2.

f(x) = (x + 2)(x − 6). Its zeros are correct, but its leading coefficient is 1 instead of 1/2.

f(x) = 0.5(x − 2)(x + 6) = 0.5x² + 2x − 6. Its zeros are 2 and −6, not −2 and 6.

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