bd c2

bd c2: 徐州市公共资源交易网,If the roots of the equation a2+b2 x2 2ac + bd x + c2+d2 = 0 are equal ...,Nokia C2 Price in Bangladesh 2024, Full Specs & Review - MobileDokan,Nokia C2 2nd edition - MobileDokan,
bd c2

2024-07-05

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Verified by Toppr. The correct option is B ad =bc. (a2 +b2)x2 −2(ac+bd)x+(c2 +d2) =0 has equal roots. Therefore, discriminant = 0. Thus [2(ac+bd)]2 +4(a2+b2)(c2 +d2) ⇒ a2c2 +b2d2 +2ac.bd = a2c2 +a2d2 +b2c2 +b2d2. ⇒ (ad −bc)2 = 0$. ⇒ ad−bc =0. ⇒ ad = bc.
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