tyrod04
tyrod04 tyrod04
  • 20-09-2019
  • Mathematics
contestada

Help? Algebra 2 complex numbers

Help Algebra 2 complex numbers class=

Respuesta :

jimrgrant1 jimrgrant1
  • 20-09-2019

Answer:

- 5 - 2i[tex]\sqrt{11}[/tex]

Step-by-step explanation:

Using the rule of radicals

[tex]\sqrt{a}[/tex] × [tex]\sqrt{b}[/tex] ⇔ [tex]\sqrt{ab}[/tex]

and [tex]\sqrt{-1}[/tex] = i

Evaluate the radical

[tex]\sqrt{-44}[/tex]

= [tex]\sqrt{4(11)(-1)}[/tex]

= [tex]\sqrt{4}[/tex] × [tex]\sqrt{11}[/tex] × i

= 2i[tex]\sqrt{11}[/tex]

Hence

- 5 - [tex]\sqrt{-44}[/tex]

= - 5 - 2i[tex]\sqrt{11}[/tex]

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