Class XI

Addition and Subtraction of Complex Numbers

Lesson

Practice

Interactive practice questions

Evaluate $\left(3+6i\right)+\left(7+3i\right)$(3+6i)+(7+3i).

Easy

< 1min

Evaluate $\left(9+2i\right)-\left(6-7i\right)$(9+2i)−(6−7i).

Easy

< 1min

Evaluate $\left(6+9i\right)-\left(-3-4i\right)$(6+9i)−(−3−4i).

Easy

< 1min

Evaluate $\left(-1+5i\right)-2$(−1+5i)−2.

Easy

< 1min

Outcomes

11.A.CNQE.1

Need for complex numbers, especially √-1, to be motivated by inability to solve every quadratic equation. Brief description of algebraic properties of complex numbers. Argand plane and polar representation of complex numbers. Statement of Fundamental Theorem of Algebra, solution of quadratic equations in the complex number system.

Addition and Subtraction of Complex Numbers

Interactive practice questions

Outcomes

11.A.CNQE.1

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