Răspunsuri

2014-04-15T13:35:25+03:00
9x²-48x
ar veni (3x)^+2*3x*ceva

2*3*?=48
6*?=48
?=8

ceva=ul ala e 8

(3x)^+2*3x*8+8^2=
9x²-48x+64=
(3x-8)^2


2014-04-15T13:36:10+03:00
9x²-48x+64=(3x-8)²
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