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Octavianiacob42
a fost răspuns

a)(x-3) (x+2)+(2x+1) (3x-2)-2x (x+1)
b)(x-6) (2x+5)-(x+2) (x+3)+(3-x) (x+4)
c)(a+b) (a+3b)+(2a-3b) (a+2b)-(a-b) (3a+b)
d)(x³+x) (x+1)-x²(2+x)+(x+2) (3+x²)-6
Va rog frumosss

Răspuns :

A)  = x²+2x-3x-6+6x²-4x+3x-2-2x²-2x = 5x²-4x-8
B)  =2x²+5x-12x-30 -x²-3x-2x-6+3x+12-x²-4x= -13x-24
C)  =a²+3ab+ab+3b²+2a²+4ab-3ab-6b²-3a²-ab+3ab+b² = 7ab-2b²
D)  = x la a4a +x³+x²+x-2x²-x³+3x+x³+6+2x²-6 = x la a4a+x³+x²+4x