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If (x^2+bx+25) is a perfect square and (b) is negative, what is (b)?(x^2+bx+25) पूर्ण वर्ग हो और (b) ऋणात्मक हो, तो (b) क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (-10)(-10)
Since (25=5^2), for the negative perfect square (b=-2\cdot5=-10). Exam tip: read the sign condition carefully.(25=5^2), इसलिए ऋणात्मक पूर्ण वर्ग में (b=-2\cdot5=-10) है। परीक्षा में संकेत शर्त जरूर पढ़ें।
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