Correct Answer: Option C

Explanation

Factorize 15 + 7x - 2x²

(5 - x)(3 + 2x); suppose 15 + 7x = 2x² = 0

∴ (5 - x)(3 + 2x) = 0

x = 5 or x = -\(\frac{3}{2}\)

Since 5 is a root, then (x - 5) is a factor

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