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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 :

EmilJoaca
a) 2x*x+2x*3-1*x-1*3 -2*x(2) -2*x-2*1= 2x(2)+6x-x-3-2x(2)-2x-2 = 3x - 5 . . . (2) - la puterea a doua

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