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2.07 Complex conjugates and moduli of complex numbers

Interactive practice questions

If $a$a and $b$b are real numbers, then any number of the form $a+bi$a+bi is:

An irrational number

A

An imaginary number

B

A complex number

C

A real number

D
Easy
< 1min

The numbers $3+4i$3+4i and $3-4i$34i, which differ only in the sign of the imaginary parts, are called:

Easy
< 1min

The product of a complex number and its conjugate is always:

Easy
< 1min

To find the quotient of two complex numbers in standard form, we have to multiply both the numerator and denominator by the complex conjugate of the:

Easy
< 1min
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Outcomes

MGSE9-12.N.CN.3

Find the conjugate of a complex number; use the conjugate to find the absolute value (modulus) and quotient of complex numbers.

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