If one root of the equation 2x2 + kx + 4 = 0 is 2, then the other root is
In the given equation 2x2 + kx + 4 = 0
Let α and β be the two roots
α = 2 (given)
here a = 2, b = k and c = 4
sum of the roots
⇒ α + β =
⇒ 2 + β =
β = – k
α β = 2
β = 2/2 = 1(putting value of α = 2)