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2009-12-09T15:57:41+01:00
5x-|(5x-(6x-2)|+(x-8)=
5x-|-(5x-(6x+2))|+(x-8)=
5x(5x-6x+2)+(x-8)=
25x²-30x²+10x+x-8=
-5x²+11x-8

a²-3b²+[-(a²-2ab-b)-2ab]
a²-3b²-a²+2ab+b-2ab
-3b²+b

2009-12-09T16:25:53+01:00
5x-|(5x-(6x-2)|+(x-8)=
5x-|-(5x-(6x+2))|+(x-8)=
5x(5x-6x+2)+(x-8)=
25x²-30x²+10x+x-8=
-5x²+11x-8

a²-3b²+[-(a²-2ab-b)-2ab]
a²-3b²-a²+2ab+b-2ab
-3b²+b