If one of the roots of the quadratic equation x^2+mx+24= 0 is x=1.5, then what is the value of m ?
A
-22.5
B
-17.5
C
-10.5
D
16
Correct Answer: -17.5
যেহতু 1.5 সমীকরণটির একটি মূল সেহেতু ( 1.5)2 + 1.5m + 24 = 0 2.25 + 1.5m + 24 = 0 m = - 26.25/1.5 m = - 17.5