Question

 2c (1+c)- (c-2)( c+4) упростить выражение

Answer 1

$2c (1+c)- (c-2)( c+4)=2c+2c^2-(c^2+4c-2c-8)= \ = 2c+2c^2-c^2-4c+2c+8=c^2+8$

 

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