Răspunsuri

Cel mai inteligent răspuns!
2014-06-18T14:32:34+03:00
[3x+(2-x)]x[3x-(2-x)]

Asta e formula de la (a+b)(a-b)=a^2-b^2
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2014-06-18T14:34:32+03:00
( 3x+6x)la patrat--(2-x)la patrat si egal:3xpatrat+2ori3xori6x+6x la patrat-- 2x la patrat--2ori2orix+xla patrat