Class XI

Complex Numbers and 4 Operations

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 $\left(2+3i\right)-\left(-6+8i\right)+\left(4-i\right)$(2+3i)−(−6+8i)+(4−i).

Easy

1min

Simplify $-6\left(3-5i\right)$−6(3−5i).

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.

Complex Numbers and 4 Operations

Interactive practice questions

Outcomes

11.A.CNQE.1

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