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Dinamicul10
a fost răspuns

Efectuati: a) (2x-1) (x+3)-2(x la a 2 +x+1)
b)(3x-7) {3(x+1)-2(x+3)}-2x(x+6)
c) (x+5){3x-2(x+2)}-x(x+4)
d) (x-3){2x-3(x-1)}+x(x+5)
e) (2x+5)[5(x+1)+2(x-2)]-4x(5x-4)

Răspuns :

Carmen1993
a) (2x la patrat+2x*3-1*x-1*3)- 2x la a doua -2x-2*1=2 x la patrat+6x-x-3-2x la a doua-2x-2=3x -5
EmilJoaca
a) (2x-1) (x+3) - 2 (x2+x+1) = 2x*x+2x*3 -1*x-1*3 - 2*x(la a 2) -2*x-2*1 = 2x(la a 2) + 6x - x - 3 - 2x(la a 2) - 2x - 2 = 3x - 5

Sper ca te-am ajutat

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