anonymous
  • anonymous
How do I multiply (5+x)(5+2x). Help is greatly needed
Mathematics
katieb
  • katieb
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lilg132
  • lilg132
5 * 5 = 25 5 * 2x = 10x x * 5 = 5x x * 2x = 2x^2 so 2x^2 + 5x + 10x + 25 which is now 2x^2 + 15x + 25 remember to click good answer
anonymous
  • anonymous
Use the parrot beak technique|dw:1323789751994:dw| the lines of the beak are the numbers you have to multiply: so 5*5 + x*5 + x*5 + x*2x
ash2326
  • ash2326
multiply term by term (5+x)(5+2x) 5(5+2x)+x(5+2x) 25+10x+5x+2x^2 2x^2+15x+25

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lilg132
  • lilg132
|dw:1323789902300:dw|
lilg132
  • lilg132
|dw:1323789917134:dw|
anonymous
  • anonymous
Thanks friends I really needed the help.
anonymous
  • anonymous
Haha :P ... I learned this technique from my math teacher when he was in a funny mood ;P
lilg132
  • lilg132
your welcome

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