.U 10)(A)(D) O (Bयदि x + 17x + 72 = 0 तो x का मान – InterviewSolution

1.

.U 10)(A)(D) O (Bयदि x + 17x + 72 = 0 तो x का मान क्या होगा?(A)-9 या 8 (B)-8 या 9 (C)-8 या 9 (D)8| (B)(C))(A)

Answer»

x^2 + 17x + 72 = 0x^2 + 9x + 8x + 72 = 0x(x + 9) + 8(x + 9) = 0(x + 8)(x + 9) = 0x = - 8, - 9

(C) is correct option

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