If one of the roots of the quadratic equation x2 + mx + 24 = 0 is 1.5, then what is the value of m ?
Solution
Correct Answer: Option C
প্রশ্নে বলা হচ্ছে, x2 + mx + 24 = 0 সমীকরণের একটি মূলের মান 1.5 হলে m = ?
দেয়া আছে, একটি মূল অর্থাৎ x = 1.5
এখন, x2 + mx + 24 = 0
=> (1.5)2 = 1.5m +24 = 0
=> 2.25 +1.5m + 24 = 0
=> 1.5m = -26.25
∴ m = -26.25/1.5 = - 17.5
দেয়া আছে, একটি মূল অর্থাৎ x = 1.5
এখন, x2 + mx + 24 = 0
=> (1.5)2 = 1.5m +24 = 0
=> 2.25 +1.5m + 24 = 0
=> 1.5m = -26.25
∴ m = -26.25/1.5 = - 17.5
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