Question

If one root of equation 2x2
+ax+6=0 is 2 then a=​

Answer 1

Answer:

Value of a = -7

Step-by-step explanation:

Given one root of equation 2x2

one root of equation 2x2+ax+6=0 is 2

Substitute x = 2 , in the equation, we get

=> 2×2²+a×2+6 = 0

=> 8+2a+6=0

=> 2a+14=0

/* Divide each term by 2, we get

=> a+7=0

=> a = -7

Therefore,

Value of a = -7

•••♪