Mathematics · JEE

Complex Numbers and Quadratic Equations Concepts for JEE

34+ syllabus-aligned questions available

Quick answer

Master Complex Numbers and Quadratic Equations by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.

Build clear conceptual foundations for Complex Numbers and Quadratic Equations before speed practice. This guide covers what JEE expects and how to test yourself with MCQs.

Concept explainer

Concept overview for Complex Numbers and Quadratic Equations covering 8 JEE syllabus subtopics including Complex numbers as ordered pairs of reals, Representation of complex numbers in the form a+ib and their representation in a plane, Argand diagram.

Key points

  • Understand the definition and scope of Complex numbers as ordered pairs of reals in the JEE syllabus
  • Memorise key formulas and standard results linked to Complex numbers as ordered pairs of reals
  • Practise 20–40 syllabus-aligned MCQs with step-by-step solutions
  • Understand the definition and scope of Representation of complex numbers in the form a+ib and their representation in a plane in the JEE syllabus
  • Memorise key formulas and standard results linked to Representation of complex numbers in the form a+ib and their representation in a plane
  • Practise 20–40 syllabus-aligned MCQs with step-by-step solutions

JEE tips

  • Revise Complex numbers as ordered pairs of reals with a one-page formula sheet before attempting mixed tests
  • After each practice set, log mistakes specific to Complex numbers as ordered pairs of reals and reattempt after 48 hours
  • Revise Representation of complex numbers in the form a+ib and their representation in a plane with a one-page formula sheet before attempting mixed tests
  • After each practice set, log mistakes specific to Representation of complex numbers in the form a+ib and their representation in a plane and reattempt after 48 hours

Common trap

Students often rush Complex numbers as ordered pairs of reals questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.

65+ important formulas for Complex Numbers and Quadratic Equations

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Free sample questions

Attempt 8 free MCQs for Complex Numbers and Quadratic Equations. Unlock 26+ more with Pro.

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Q1MathsUnit 2: Complex Numbers and Quadratic Equations
If x+1x=4,x+\frac{1}{x}=4, then x4+1x4x^{4}+\frac{1}{x^{4}} is equal to
Q2MathsUnit 2: Complex Numbers and Quadratic Equations
What are the solution(s) to the system of equations y=x29\boldsymbol{y}=\boldsymbol{x}^{2}-\mathbf{9} and y3=\boldsymbol{y}-\boldsymbol{3}= x?x ?
Q3MathsUnit 2: Complex Numbers and Quadratic Equations
If we plot Z1=2\left|Z_{1}\right|=2 and Z268i=4\left|Z_{2}-6-8 i\right|=4 on the argand plane, the locus of Z1Z_{1} and Z2Z_{2} are
Q4MathsUnit 2: Complex Numbers and Quadratic Equations
For a complex number z, the minimum value of z+z2|z|+|z-2| is
Q5MathsUnit 2: Complex Numbers and Quadratic Equations
A family is going to a theme park having tt members in the family. Each ticket costs $80,\$ 80, and the number of tickets needs to be bought can be calculated from the expression t2t^{2}- 4t90=64 t-90=6 when t>0.t>0 . What is the total cost of the theme park tickets that the family paid?
Q6MathsUnit 2: Complex Numbers and Quadratic Equations
If (1i)x+(1+i)y=13i,(1-i) x+(1+i) y=1-3 i, then (x,y)=(x, y)=
Q7MathsUnit 2: Complex Numbers and Quadratic Equations
Determine the nature of roots of the equation x2+2x3+3=0x^{2}+2 x \sqrt{3}+3=0
Q8MathsUnit 2: Complex Numbers and Quadratic Equations
Let ziz \neq-i be any complex number such that ziz+i\frac{z-i}{z+i} is a purely imaginary number. Then z+1zz+\frac{1}{z} is :

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Frequently asked questions

What concepts in Complex Numbers and Quadratic Equations are essential for JEE?

Focus on core ideas across Complex numbers as ordered pairs of reals, Representation of complex numbers in the form a+ib and their representation in a plane, Argand diagram, Algebra of complex numbers, and more. JEE tests application, not just memorisation.