anonymous
  • anonymous
Write the answer in descending powers of x. (5x2 - 7)(5x2 + 7)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
ok so this one is easy
TheSmartOne
  • TheSmartOne
|dw:1433944463257:dw|
anonymous
  • anonymous
|dw:1433944456863:dw|

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TheSmartOne
  • TheSmartOne
and welcome to OpenStudy! @lauraoar
TheSmartOne
  • TheSmartOne
Just use the foil method. What do you get?
anonymous
  • anonymous
thank you! so whats the answer?
TheSmartOne
  • TheSmartOne
Sorry, we do not give answers on OpenStudy.
anonymous
  • anonymous
|dw:1433944702920:dw|
TheSmartOne
  • TheSmartOne
We are here to guide you (the asker) to the answer. OpenStudy's prime purpose is to help you learn...
anonymous
  • anonymous
sorry I messed up on the equation lol
anonymous
  • anonymous
oh sorry im new lol, but this is my first time learning this. can yall give me like a step by step solution?
anonymous
  • anonymous
|dw:1433944935922:dw|
anonymous
  • anonymous
thanks so much!
TheSmartOne
  • TheSmartOne
An easier method for this question is to use this formula: \(\sf\Large (a+b)(a-b)=a^2-b^2\)

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