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 3.(x-1).(2x+1)-(x-2)^2 What İs Simple Status

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3.(x-1).(2x+1)-(x-2)^2

 

What İs Simple Status

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 Apr 28, 2014

Best Answer 

 #1
avatar+33661 
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3(x-1)(2x+1) - (x-2)2  Multiply the first set of bracketed terms to get

3(2x2 + x - 2x -1) - (x-2)2  = 3(2x2 - x -1) - (x-2)2 =  6x2 - 3x -3 - (x-2)2 Expand the second set of brackets to get

6x2 - 3x -3 - (x2-4x+4) = 6x2 - 3x -3 - x2 + 4x - 4  Collect like terms to get

5x2 +x -7

 Apr 28, 2014

1+0 Answers

 #1
avatar+33661 
+5
Best Answer

3(x-1)(2x+1) - (x-2)2  Multiply the first set of bracketed terms to get

3(2x2 + x - 2x -1) - (x-2)2  = 3(2x2 - x -1) - (x-2)2 =  6x2 - 3x -3 - (x-2)2 Expand the second set of brackets to get

6x2 - 3x -3 - (x2-4x+4) = 6x2 - 3x -3 - x2 + 4x - 4  Collect like terms to get

5x2 +x -7

Alan Apr 28, 2014

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