What is (x-5) (x+5)?

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30-04-2014
Mathematics

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What is (x-5) (x+5)?

Sagot :

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TacoGodidn TacoGodidn · Answer 1 · 2014-04-30T18:57:31-04:00

TacoGodidn TacoGodidn

30-04-2014

[tex](x-5)(x+5)\\FOIL\ Method\\\\First \\x*x=x^2\\\\Outside\\x*5=5x\\\\Inside\\-5*x=-5x\\\\Last\\-5*5=-25 \\\\ Combine\ like\ terms.\\\\-5x+5x=0x\\\\Combine\ together\\\\x^2-25[/tex]

Hope this helped :)

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Kate200468idn Kate200468idn · Answer 2 · 2014-05-02T19:59:36-04:00

Kate200468idn Kate200468idn

02-05-2014

[tex](x-5) (x+5)=x\cdot x+5\cdot x-5\cdot x-5\cdot5=x^2+5x-5x-25=\\ \\=x^2-25[/tex]

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