Mindblast3r
  • Mindblast3r
help
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Mindblast3r
  • Mindblast3r
\[\left( a+b \right)^2\]
Mindblast3r
  • Mindblast3r
how to do this?
hartnn
  • hartnn
square of (a+b) square means multiply with itself. like square of 2 is 2*2 =4 square of a+b is (a+b)*(a+b) distribute!

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More answers

UsukiDoll
  • UsukiDoll
\[\left( a+b \right)^2 \] you have to write (a+b)(a+b) twice because the exponent is 2
UsukiDoll
  • UsukiDoll
and then use FOIL
Mindblast3r
  • Mindblast3r
FOIL?
UsukiDoll
  • UsukiDoll
first outer inner last
UsukiDoll
  • UsukiDoll
\[(a+b)(a+b) = (a)(a)+(a)(b)+(b)(a)+(b)(b)\]
UsukiDoll
  • UsukiDoll
\[(a^2)+2(ab)+(b^2)\]
hartnn
  • hartnn
|dw:1434802387781:dw|
hartnn
  • hartnn
|dw:1434802435664:dw|
Mindblast3r
  • Mindblast3r
oh i think i get it now.
hartnn
  • hartnn
|dw:1434802466252:dw| sorry for the rubbish handwriting lol
Mindblast3r
  • Mindblast3r
lawl it's okay, i'm analyzing what you wrote.
Mindblast3r
  • Mindblast3r
oh! I get it now! wait i will make an example to show, and you guys tell me if it's right
UsukiDoll
  • UsukiDoll
when I first learned it I memorized a code (1+2)(3+4) = (1)(3)+(1)(4)+(2)(3)+(2)(4) (first #)(third #)+ (first #)(fourth#)+(2nd #)(3rd #)+(2nd #)(4th #) but I don't do it anymore
Mindblast3r
  • Mindblast3r
one sec
Mindblast3r
  • Mindblast3r
|dw:1434802648764:dw|
Mindblast3r
  • Mindblast3r
ok it's the same thing as hartnns
UsukiDoll
  • UsukiDoll
yeah it's correct
Mindblast3r
  • Mindblast3r
ok, perfect!

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