Problem 163 of 7
Use the factored form of -(x+2)(x-5) to identify where the quadratic is positive or negative.
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use zeros and interval signs.
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Factored quadratic must have real zeros and clear sign intervals.
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Your answer is equivalent to the expected form.
Walkthrough
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1. Identify the zeros from the factors.
2. Split the number line into intervals around the zeros.
3. Test one value in each interval or reason from factor signs.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Sign conclusions that ignore a negative leading factor or repeated root.