Exercitiu mate

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AlexGooDz
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05 Nov 2013, 19:04

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Cum pot rezolva 3c?

Nu pot intelege care-I diferenta dintre xla 2 si x normal..
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Pavel
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05 Nov 2013, 19:09

x la a 2a este exact cum e si 2 la a2a , numai ca x este un numar necunoscut.
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AlexGooDz
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05 Nov 2013, 19:10

Da, celalate exercitii le inteleg, pana am dat de x2 si x, pana acuma am avut doar x in tot exercitiu sau doar x2 in tot exercitiu, daca imi poti..
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Pavel
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05 Nov 2013, 19:14

deci fi atent x^2 nu are treaba cu x, pur si simplu x^2 spune ca e a so x e b, daca iti e mai usor asa, dupaia poti inlocui a cu x^2 si b cu x
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SPLAT
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05 Nov 2013, 19:22

(6x^2-5x+3)+(-5x^2+4x-5)+(x-7)=
6x^2-5x+3-5x^2+4x-5+x-7=
x^2-9=(x+3)(x-3)
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AlexGooDz
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05 Nov 2013, 19:26

Mersi SPLAT, asta-i rezultatul bun xD
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tictac
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05 Nov 2013, 19:30

Ti le-am rezolvat pe toate.

a) 7x+12
b) 6x +13
c) x^2 -9
d) -12^2 - 12x
e) 2x+4y+5
f)19x - 6y +5z

y/3+7x/4
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AlexGooDz
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05 Nov 2013, 19:32

Tictac rezultatul il am si eu pe spate eu vreau si calculul.
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KingWz
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05 Nov 2013, 19:32

SPLAT wrote:(6x^2-5x+3)+(-5x^2+4x-5)+(x-7)=
6x^2-5x+3-5x^2+4x-5+x-7=
x^2-9=(x+3)(x-3)
turky stie matematica :))
dem hoez
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tictac
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05 Nov 2013, 19:33

AlexGooDz wrote:Tictac rezultatul il am si eu pe spate eu vreau si calculul.

Calculele sunt simple... poti sa le spui ca le-ai facut mintal.
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