Math, asked by sk700, 1 year ago


[/tex]<br />[tex]ecxpand :  ( 2a - 2b - 3c)^{2}

Answers

Answered by Incredible29
1
Hey
Here's your answer !!

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( 2a - 2b - 3c)²

= ( 2a )² + ( -2b )² + ( -3c )² + 2 { ( 2a × -2b ) + ( -2b × -3c ) + ( -3c × 2a ) }

= 4a² + 4b² + 9c² + 2 { ( -4ab ) + 6bc + ( - 6ac ) }

= 4a² + 4b² + 9c² + 2 ( 6bc - 6ac - 4ab )

= 4a² + 4b² + 9c² + 12bc - 12ac - 8ab . [ Answer ]

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Hope it helps !!

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sk700: if the side of an equilateral triangle is
\sqrt[6]{3cm}​6​​√​3cm​​​ 
then it's height is A 8cm B 9cm C 4cm d
\sqrt[12]{3cm}​12​​√​3cm​​​ 
Incredible29: i dunno it sry
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