anonymous
  • anonymous
Expand the brackets and collect terms: (X+2)^2 - (X+1)^2 I worked it out to be 1x + 3, but the answer book says 2x + 3, can anyone explain please?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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austinL
  • austinL
\((x+2)^2=(x+2)(x+2)\) FOIL that out for me.
anonymous
  • anonymous
FOIL?
austinL
  • austinL
\(\color{red}{\text{FOIL}}\) \(\color{red}{\text{F}}\text{irst}\) \(\color{red}{\text{O}}\text{uter}\) \(\color{red}{\text{I}}\text{nner}\) \(\color{red}{\text{L}}\text{ast}\) \((a+b)(c+d)=ac+ad+bc+bd\)

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anonymous
  • anonymous
Ah right, I'm with you, thanks a lot.
austinL
  • austinL
No problem :)

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