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Which of the following quadratic expressions can be written as a product of two linear binomials with integer coefficients?निम्नलिखित में से किस द्विघात व्यंजक को पूर्णांक गुणांकों वाले दो रैखिक द्विपदों के गुणनफल के रूप में लिखा जा सकता है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(x^2 - 5x + 6\)\(x^2 - 5x + 6\)
For \(x^2-5x+6\), we need two integers whose product is 6 and whose sum is \(-5\). They are \(-2\) and \(-3\), so it is \((x-2)(x-3)\). Exam tip: check both product and sum.\(x^2-5x+6\) के लिए ऐसे दो पूर्णांक चाहिए जिनका गुणनफल 6 और योग \(-5\) हो। वे \(-2\) और \(-3\) हैं, अतः \((x-2)(x-3)\) मिलता है। परीक्षा में गुणनफल और योग दोनों जाँचें।
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