If one root of the equation 2x2+ax+6=0 is 3, then the value of a is ___________.
-8
7
3
5
If one root of the equation 2x2+ax+6=0 is 3, then substituting x=3 will satisfy the equation.
2(3)2+3a+6=0
⇒18+3a+6=0
⇒24+3a=0
⇒a=−8
If one of the roots of the equation 2x2 + ax + 6 = 0 is 3, then find the value of a
If one root of the equation 2x2+ax+6=0 is 3, then find the value of a
If one root of the equation 2x2+ax+6=0 is 3, then find the value of a.