If x = 3 is a zero of 2x² - kx - 3 then what is k?
यदि x = 3 बहुपद 2x² - kx - 3 का शून्यक है तो k का मान क्या होगा?
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Correct Answer
C. 5 / 5
ExplanationPutting x = 3 gives 18 - 3k - 3 = 0 so 15 = 3k and k = 5.
x = 3 रखने पर 18 - 3k - 3 = 0 इसलिए 15 = 3k और k = 5।