Question
Two times a number, added to the square of that number,
gives 3. What could be the possible answer for this number?Solution
Let the number be x. According to question, ⇒ 2x + x2 = 3 ⇒ x2 + 2x – 3 = 0 ⇒ x2 – x + 3x – 3 = 0 ⇒ (x – 1)(x + 3) = 0 ⇒ x = 1, -3
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