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x^2 - 9x + 20 = 0 ના બીજનો સરવાળો કેટલો થાય?

A4
B9
C5
D20
Answer & Solution
Correct answer: B. 9
સમીકરણના અવયવો (x - 4)(x - 5) પડે છે, તેથી તેના બીજ 4 અને 5 છે, જેનો સરવાળો 9 થાય છે.
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