If x = -3 is a zero of 2x² + kx - 9 then what is k?
यदि x = -3 बहुपद 2x² + kx - 9 का शून्यक है तो k का मान क्या होगा?
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Correct Answer
C. 3 / 3
ExplanationPutting x = -3 gives 18 - 3k - 9 = 0 so 9 = 3k and k = 3.
x = -3 रखने पर 18 - 3k - 9 = 0 इसलिए 9 = 3k और k = 3।