यदि एक बहुपद p(x) = x² - 4 हो, तो इसके शून्यक (zeros) हैं:
उत्तर: (D) ±2 — x² - 4 = 0 → x² = 4 → x = ±2. This is difference of squares: x² - 4 = (x+2)(x-2). Zeros: +2 and -2.
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