Question

If one root of the quadratic equation 3x2 – ax + 4 = 0 is 4. Find

the value of a.​

Answer 1

Answer:

$3(4) - a(4) + 4 = 0 \\ 12 - 4a + 4 = 0 \\ 16 - 4a = 0 \\ 12a = 0$

ok

Answer 2

3 x^2 -ax = -4

Value of x is 4

3*16 -4a = -4

48+4 = 4a

52 = 4a

13 = a