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यदि त्रिघात बहुपद ax3 + bx2 + cx + d का एक मूल 0 है तब अन्य दो मूलों का गुणनफल ज्ञात कीजिए।

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त्रिघात बहुपद ax3 + bx2 + cx +d में, α = 0

तब αβ + βγ + γα = \(\frac{c}{a}\)

0 × β + βγ × γ × 0 = \(\frac{c}{a}\)

0 + βγ + 0 = \(\frac{c}{a}\)

अतः दो मूलों का गुणनफल, βγ = \(\frac{c}{a}\)

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