anonymous
  • anonymous
Can someone help for a medal?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
A greenhouse that specializes in growing geraniums is divided into sections. The number of geranium pots in each section depends on the number of sprinklers in that section. There are x(7x − 2) pots of red geraniums and (x + 3)2 pots of pink geraniums in a section with x sprinklers. Which simplified expression represents the total number of red and pink geranium pots in a section with x sprinklers? 8x2 + 4x + 9 8x2 + 6x + 9 8x2 + 6x + 7 8x4 + 4x2 + 9
Plasmataco
  • Plasmataco
ok
Plasmataco
  • Plasmataco
graph?

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More answers

anonymous
  • anonymous
Nope, did not come with one :(
Plasmataco
  • Plasmataco
the first one. Im not that sure tho
Plasmataco
  • Plasmataco
yup, the first 1
anonymous
  • anonymous
What made you choose the first one?
anonymous
  • anonymous
@Plasmataco
anonymous
  • anonymous
Is he correct?
jim_thompson5910
  • jim_thompson5910
what does x*(7x-2) simplify to?
anonymous
  • anonymous
7x^2 - 2x
jim_thompson5910
  • jim_thompson5910
how about (x+3)^2 ?
anonymous
  • anonymous
x^2 + 9?
jim_thompson5910
  • jim_thompson5910
nope
jim_thompson5910
  • jim_thompson5910
close though
jim_thompson5910
  • jim_thompson5910
you have to FOIL
jim_thompson5910
  • jim_thompson5910
\[\Large (a+b)^2 \neq a^2 + b^2\]
jim_thompson5910
  • jim_thompson5910
\[\Large (a+b)^2 = (a+b)*(a+b)\] then FOIL
anonymous
  • anonymous
I never understood how to use FOIL :(
jim_thompson5910
  • jim_thompson5910
why not try a table then
jim_thompson5910
  • jim_thompson5910
|dw:1434587606302:dw|
jim_thompson5910
  • jim_thompson5910
fill out the table by multiplying the headers eg: x times 3 = 3x |dw:1434587643368:dw|
anonymous
  • anonymous
Ooh, this method is completely new to me. So would the top left be x^2?
jim_thompson5910
  • jim_thompson5910
yes since x times x = x^2 |dw:1434587719782:dw|
anonymous
  • anonymous
And the bottom left would be 3x
jim_thompson5910
  • jim_thompson5910
yep |dw:1434587746108:dw|
anonymous
  • anonymous
Alright, so what next?
jim_thompson5910
  • jim_thompson5910
we fill out the last box 3 times 3 = 9 |dw:1434587803197:dw|
anonymous
  • anonymous
Oh you do that side too??
jim_thompson5910
  • jim_thompson5910
then we add up all of the expressions inside the table |dw:1434587822641:dw|
anonymous
  • anonymous
Well, box I mean. Haha, sorry about that
jim_thompson5910
  • jim_thompson5910
yeah the entire table needs to be filled out
anonymous
  • anonymous
So x^2 + 6x + 9
jim_thompson5910
  • jim_thompson5910
very good
jim_thompson5910
  • jim_thompson5910
so (x+3)^2 = x^2 + 6x + 9
jim_thompson5910
  • jim_thompson5910
now add 7x^2 - 2x and x^2 + 6x + 9 to get your answer
anonymous
  • anonymous
8x^2 + 5x + 9?
jim_thompson5910
  • jim_thompson5910
close
anonymous
  • anonymous
What did I do wrong? Am I supposed to add the exponents? Or...?
jim_thompson5910
  • jim_thompson5910
line up the terms and add straight down |dw:1434587769859:dw|
jim_thompson5910
  • jim_thompson5910
the exponents stay the same
jim_thompson5910
  • jim_thompson5910
\[\Large 7x^2 + x^2 = 8x^2\] \[\Large 7x^2 + x^2 \neq 8x^4\]
anonymous
  • anonymous
OH MY GOD I FEEL SO STUPID
anonymous
  • anonymous
I messed up simple subtraction...
jim_thompson5910
  • jim_thompson5910
don't beat yourself up, it's fine
anonymous
  • anonymous
7x^2 + 4x + 9. Sorry about that :D
anonymous
  • anonymous
8x^2 + 4x + 9*
jim_thompson5910
  • jim_thompson5910
looks good |dw:1434588029526:dw|
anonymous
  • anonymous
Alright, so what do we do from here?
jim_thompson5910
  • jim_thompson5910
the problem is done now
anonymous
  • anonymous
Oh, yeah my bad. I was looking at the wrong question on my sheet. Sorry about that. Thank you so much!
jim_thompson5910
  • jim_thompson5910
no problem
anonymous
  • anonymous
@jim_thompson5910 One more thing. You should really be a qualified helper. You are so good at breaking down the steps to a point where really anyone can understand it. You really should get paid to do help others if you don't already.

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