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i need to solve that equation (x-1)^3-x*(x-2)^2=1-2x

 May 6, 2015

Best Answer 

 #2
avatar+33661 
+5

Expand the terms in parentheses;

x3 - 3x2 + 3x -1 - x3 + 4x2 -4x = 1 - 2x

 

Collect like terms

x2 + x - 2 = 0

 

This factors nicely:

(x - 1)(x + 2) = 0

 

so x = 1 and x = -2 are the solutions

.

 May 6, 2015
 #1
avatar+61 
0

idk solve it out

 May 6, 2015
 #2
avatar+33661 
+5
Best Answer

Expand the terms in parentheses;

x3 - 3x2 + 3x -1 - x3 + 4x2 -4x = 1 - 2x

 

Collect like terms

x2 + x - 2 = 0

 

This factors nicely:

(x - 1)(x + 2) = 0

 

so x = 1 and x = -2 are the solutions

.

Alan May 6, 2015

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