NDA2011MathematicsQuadratic EquationActual
The equation x^2-4 x+29=0 has one root 2+5 i . What is the other root? (i= -1 )
Options
- A2
- B5
- C2+5 i
- D2-5 i
Correct answer
D. 2-5 i
Step-by-step solution
The given equation x^2-4 x+29=0 Here, a=1, b=-4, c=29 Sum of roots = -b a =4 Let other root = According to the question, 2+5 i+ =4 aligned & =4-2-5 i & =2-5 i aligned Other root =2-5 i