text: # Simplifying and giving answers in cartesian form
  
  • Nov 3rd 2013, 04:44 AM
  Question101
  Simplifying and giving answers in cartesian form
  Hi there i have a question to ask
  
  The following must be simplify and must be answered in cartesian form, present your answer on an argand diagram. Im not too sure how to do these could someone explain it please? thank you :)
  
  Question (a)
  
  (4+5j)(4+5j)
  
  Question (b)
  
  (-5-2j)(5+2j)
  • Nov 3rd 2013, 05:41 AM
  topsquark
  Re: Simplifying and giving answers in cartesian form
  Quote:
  
  Originally Posted by Question101
  Hi there i have a question to ask
  
  The following must be simplify and must be answered in cartesian form, present your answer on an argand diagram. Im not too sure how to do these could someone explain it please? thank you :)
  
  Question (a)
  
  (4+5j)(4+5j)
  
  Question (b)
  
  (-5-2j)(5+2j)
  
  Just FOIL them out. For example, for a) $\displaystyle (4 + 5j)(4 + 5j) = 4 \cdot 4 + 4 \cdot 5j + 5j \cdot 4 + 5j \cdot 5j$
  
  Then use $\displaystyle j^2 = -1$ and collect like terms.
  
  -Dan
explanation: The document contains a math question with two parts (a) and (b) and a request for an explanation on how to solve them. There is no provided answer to the questions.
distilabel_metadata.content: Evaluate the user given text extract and determine if it contains a math question and optionally and answer to this question.
  
  Output rules:
  
  1. Briefly describe the document and mention if it contains a question or a question and answer.
  2. Finalize the output with: Label: no-question,question,question-and-answer,multiple-question,multiple-question-and-answer
distilabel_metadata.role: system
distilabel_metadata.content: # Simplifying and giving answers in cartesian form
  
  • Nov 3rd 2013, 04:44 AM
  Question101
  Simplifying and giving answers in cartesian form
  Hi there i have a question to ask
  
  The following must be simplify and must be answered in cartesian form, present your answer on an argand diagram. Im not too sure how to do these could someone explain it please? thank you :)
  
  Question (a)
  
  (4+5j)(4+5j)
  
  Question (b)
  
  (-5-2j)(5+2j)
  • Nov 3rd 2013, 05:41 AM
  topsquark
  Re: Simplifying and giving answers in cartesian form
  Quote:
  
  Originally Posted by Question101
  Hi there i have a question to ask
  
  The following must be simplify and must be answered in cartesian form, present your answer on an argand diagram. Im not too sure how to do these could someone explain it please? thank you :)
  
  Question (a)
  
  (4+5j)(4+5j)
  
  Question (b)
  
  (-5-2j)(5+2j)
  
  Just FOIL them out. For example, for a) $\displaystyle (4 + 5j)(4 + 5j) = 4 \cdot 4 + 4 \cdot 5j + 5j \cdot 4 + 5j \cdot 5j$
  
  Then use $\displaystyle j^2 = -1$ and collect like terms.
  
  -Dan
distilabel_metadata.role: user
distilabel_metadata.raw_output_q_a_detector_0: The document contains a math question with two parts (a) and (b) and a request for an explanation on how to solve them. There is no provided answer to the questions.
  
  Label: multiple-question