anonymous
  • anonymous
Write the product in standard form.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
( 9 + 5i)( 9 + 8i)
anonymous
  • anonymous
41+117i
anonymous
  • anonymous
Steps?

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More answers

anonymous
  • anonymous
18 =13I
anonymous
  • anonymous
the foiling method, do you know what that is?
anonymous
  • anonymous
what do you do after (9*9)+(9*5i)+(9*8i)+(8i*5i)
anonymous
  • anonymous
(a+b)(c+d)=ab+bc+ad+bd
anonymous
  • anonymous
oh i just did it on the calculator, thats all you do there really is no steps
anonymous
  • anonymous
multiply them
anonymous
  • anonymous
do you know the meaning of i ?
anonymous
  • anonymous
look im write ok
anonymous
  • anonymous
81+157i i got this and i know its wrong can you khow steps so i can compare?
anonymous
  • anonymous
81+45i+72i-40
anonymous
  • anonymous
i gave you the right answer
anonymous
  • anonymous
isnt it 40i
anonymous
  • anonymous
i^2=-1
anonymous
  • anonymous
can i get my metal now ;)
anonymous
  • anonymous
i know you gave me the right answer but i need to know what i did wrong because i didnt get that
hartnn
  • hartnn
i is the square root of -1 so i*i = -1
phi
  • phi
(9*9)+(9*5i)+(9*8i)+(8i*5i) 81 +45i +72i+40i^2 i^2 is -1 so 81-40 + (45+72)i simplify 41+112i
anonymous
  • anonymous
why 40^2?
anonymous
  • anonymous
its 117i, phi you got it wrong
anonymous
  • anonymous
@ilikephysics2 is correct
hartnn
  • hartnn
thats why 8i * 5*i = 40 i*i =40 *(-1)= -40
phi
  • phi
typo, 117i
anonymous
  • anonymous
i got it thanks guys just one questions why you do 40 ^2
phi
  • phi
it is 40 times i*i i^2 which is -1
phi
  • phi
so do FOIL, but with the trick that i*i can be replaced with -1
anonymous
  • anonymous
oh thank you @phi so when ever its i*i you have to change it to a negative?
phi
  • phi
yes. i is short for sqrt(-1) sqrt(-1)*sqrt(-1)= -1 so keep i's but replace i*i (or i^2) with -1
anonymous
  • anonymous
okay i get it thanks to all

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