Quadratic EquationHard
Question
If 2 + 3i is one of the roots of the equation 2x3 − 9x2 + kx − 13 = 0, k ∈ R, then the real root of this equation
Options
A.exists and is equal to 1
B.exists and is equal to − 1/2
C.exists and is equal to 1/2
D.does not exist
Solution
2 + 3i + 2 – 3i + α = 9/2
α = 9/2 − 4 = 1/2
α = 9/2 − 4 = 1/2
Create a free account to view solution
View Solution FreeMore Quadratic Equation Questions
For what value of a the sum of roots of the eqn. x2 + 2 (2 − a − a2)x − a2 = 0 is zero -...The possible values of ' $b$ ', $b \in R$ for which the equations $2017x^{2} + bx + 7102 = 0$ and $7102x^{2} + bx + 2017...The equation $(x - a)(x - a - b) = 1$, where $a,b$ are positive constants has...Two students solve a quadratic equation x2 + bx + c= 0. One student solves the equation by taking wrong value of b and g...If α, β are roots of the equation px2 + qx − r = 0, then the value of is equal to -...