naynaybarros1738 naynaybarros1738
  • 07-06-2019
  • Mathematics
contestada

Express (1-2i) second power in the form a+bi

Respuesta :

jdoe0001 jdoe0001
  • 07-06-2019

[tex]\bf (1-2i)^2\implies (1-2i)(1-2i)\implies 1-2i-2i+(2i)^2 \\\\\\ 1-4i+(2^2i^2)\implies \stackrel{\textit{recall }i^2=-1}{1-4i+(4\cdot -1)}\implies 1-4i-4\implies \boxed{-3-4i}[/tex]

Answer Link

Otras preguntas

57:03 Joel had knee surgery and his doctor prescribed opiate painkillers for the pain. Which scenario would most likely lead to prescription drug abuse? Joel ta
In one hour, a roadside stand sells 24 bouquets of flowers. The stand starts operating at 9:00 AM and closes at 12:30 PM for a 30 minute lunch break. If sales c
When transcribing medical records blank is more important than speed
Which of these is an example of a reaction that absorbs energy? A. a cake baking B. a candle burning C. a firework exploding D. a piece of wood smoldering​
A solution has a Molarity of 1.3 x 10^-6 M. Calculate the pH A) 5.89 B) 4.9 C) 5.98 D) 9.14
PoInTsSsSsSsSsSsSsSsSssS
A driver drives a car up a hill. The driver keeps pressing the gas so that the engine increases the force it applies to the car. Nonetheless, the car's forward
What is the area, in square centimeters, of the shape below? Express your answer as a fraction in simplest form.
PLEASE HELPPPPPPPPPPPPPPPPP I WILL GIVE BRAINLIST
On May 22, 1960, an earthquake in Chile measured 9.5 on the Richter scale. On February 27, 2010, another earthquake in Chile measured 8.8 on the Richter scale.